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Meredith and Derek, Grey's Anatomy
Well, they don't call him Derek Shepherd McDreamy for nothin'. Ellen Pompeo's Meredith had no chance of resisting Patrick Dempsey's handsome doc, never mind that he was the one who was married at the time.
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Elaine and Puddy, Seinfeld
How many times did Puddy (Patrick Warburton) and Elaine (Julia Louis-Dreyfus) break up and make up? Too many. But what can you say? He knew about The Move.
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Ned and Maude, The Simpsons
Okely, dokely. Just because you never saw anything R-rated going on with these two doesn't mean nothing happened. Judging by how much Ned grieved for Maude when she passed away, and the existence of their two boys, we know these soul mates had quite the connection.
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Veronica and Logan, Veronica Mars
Veronica (Kristen Bell) and Logan Echolls (Jason Dohring) knew all about that thin line between love and hate. They had a rocky start to say the least (date-rape drug anyone?), but when it was good, it was really good.
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Lily and Rick, Once and Again
Single parenting has seldom looked hotter than when Lily (Sela Ward) and Rick (Billy Campbell) found themselves drawn to each other.
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Laura and Rob, The Dick Van Dyke Show
Laura (Mary Tyler Moore) was the original hot mom in those cute little slacks of hers. And twin beds or not, we always knew exactly how Rob (Dick Van Dyke) felt about her.
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Clark and Lois, Smallville
It took getting to season 10 — and countless smoldering looks — but Clark (Tom Welling) and Lois (Erica Durance) finally did the super-deed. And for many, it was well worth the wait.
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Grace and Michael, L.A. Law
Not even uptight legal eagle Grace van Owen (Susan Dey) could stay buttoned up when confronted by the likes of the charming Michael Kuzak (Harry Hamlin). Even when he was dressed in a monkey costume, they had major chemistry.
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Dylan and Kelly, Beverly Hills, 90210
From the perfectly coifed hair (his) to the beach-ready body (hers), teenage love never looked as good as when these sun-kissed lovers frolicked and angsted their way into our hearts.
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Jeannie and Major Anthony, I Dream of Jeannie
They kept it pretty PG on this show where a bachelor (Larry Hagman) has a super hot, belly-baring genie (Barbara Eden) granting his wishes, calling him Master, and mucking around in his life. But there was no denying the sizzle between these two.
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Valene and Gary, Knots Landing
Their marriage may have been tumultuous (both times), but one place Valene (Joan Van Ark) and Gary (Ted Shackelford) never had problems was in bed.
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Sun and Jin, Lost
It was risky business for Jin (Daniel Dae Kim) to start romancing the boss's daughter Sun (Yunjin Kim), but they had an attraction that couldn't be denied.
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Wilhelmina and Connor, Ugly Betty
After years of watching Wilhelmina (Vanessa Williams) strong-arm everyone in her realm, it was fun — and often pretty hot — to watch Connor (Grant Bowler) sweep her off her feet.
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Stefan and Elena, The Vampire Diaries
It's hard enough to be a teen these days. Try being a teen and falling in love with a vampire. Stefan (Paul Wesley) and Elena (Nina Dobrev) defy the laws of human nature with their sexy, smoldering, and downright dangerous relationship.
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Doug and Carol, E.R.
They may not have had the spiciest of onscreen affairs, but what Dr. Ross (George Clooney) and Carol (Julianna Marguiles) lacked in wildness they made up for with utter romance. We dare you to say you didn't squeal when the two reunited lakeside in season 6.
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Bo and Hope, Days of Our Lives
From the first time they got together back in 1984, Bo (Peter Reckell) and Hope (Kristian Alfonso) have had love scenes that threatened to burn down the set.
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Lyla and Tim, Friday Night Lights
Theirs could've been the classic football player-cheerleader romance, but Lyla (Minka Kelly) and Tim (Taylor Kitsch) had more passion than most cookie-cutter high school relationships. Sure, she was kind of-sort of still involved with Jason, but how can anyone resist Kitsch when he says, ''I can't stop thinking about you.''
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Sydney and Vaughn, Alias
Even more thrilling than Sydney's (Jennifer Garner) spy shenanigans was the will they-won't they dynamic between her and Vaughn (Michael Vartan). But the duo finally made good on all that pent-up tension and sealed the deal with a dramatic kiss set fittingly to Etta James' ''At Last'' in the show's second season.
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Diane and Bobby, NYPD Blue
The detectives-turned-lovers certainly had their share of problems (Diane's transfer to another precinct, her battle with alcoholism, a miscarriage, and, um, Bobby's death), but when Kim Delaney's Diane and Jimmy Smits' Bobby got hot and heavy, it made for very arresting television indeed.
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Amanda and Jake, Melrose Place
In the show's revolving door of relationships, the one between miniskirt-wearing Amanda (Heather Locklear) and bad boy Jake (Grant Show) proved the steamiest of the bunch, thanks to an office romp on her desk in 1994.
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Chuck and Blair, Gossip Girl
Just seven episodes into the first season, and after a particularly sultry striptease, Chuck (Ed Westwick) and Blair (Leighton Meester) embarked on one of the hottest love-hate affairs the Upper East Side has ever seen.
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Father Ralph and Meggie, The Thorn Birds
The Catholic priest (Richard Chamberlain) and his young charge (Rachel Ward) always had a too-close-for-comfort relationship. But it wasn't until she was all grown up and married to another man that they consummated their love beachside. When the miniseries aired in 1983, the story line ignited major controversy. But looking back, all we can think is, sinning is so sexy, no?
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Dave and Maddie, Moonlighting
The private eyes (Bruce Willis and Cybill Shepherd) fought more than they worked — but only to keep their crackling sexual tension at bay...until 1987, when they gave in and did the deed on the living room floor.
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Buffy and Angel, Buffy the Vampire Slayer
He was a vampire, she was a slayer, but all the good sense in Sunnydale couldn't keep the two apart. With the mother of all human-vampire trysts, Buffy (Sarah Michelle Gellar) and Angel (David Boreanaz) set the standard for forbidden love.
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Zoe and Wash, Firefly
Kickass military woman Zoe (Gina Torres) was all kinds of hard, but she had one huge soft spot for her pilot husband Wash (Alan Tudyk). They found comfort in each other in the middle of their dangerous lifestyle.
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