If Jeopardy! can have a Teen Week, why can’t Hollywood? On Aug. 20, such stars as Keanu Reeves and Bill Paxton boogied down to L.A.’s Universal City Walk for the 10th-anniversary rerelease of that ’80s teen fave Dirty Dancing. Patrick Swayze — possibly still not fully recovered from two broken legs he suffered while filming Letters From a Killer — wasn’t quite up to tripping the light fantastic. (Although he did trip over a reporter’s foot.) His old Dancing partner, Jennifer Grey, meanwhile, owned up to feeling a bit nostalgic at seeing her old self on screen — understandable, given the notable change in her facial appearance over the last decade. (Grey has said she had a nose job.) ”Every minute, I couldn’t stop welling up,” the actress divulged after the screening. Charlize Theron, who took her parents, shared her own Dirty confession: ”My mom has memories of me watching this movie like 25,000 times.” Although a decade separates Dancing and Alicia Silverstone’s newest teen angster, Excess Baggage, which premiered five days later in Westwood, Silverstone’s friend Chris Farley offered an Excess-ive plot summary that could easily apply to Dancing: ”It starts out like ‘Get away from me, punk!’ but then they fall in love.” Yeah, but at any point does anyone ever say, ”Nobody puts Batgirl in the corner!”?