By James Hibberd
Updated June 01, 2011 at 04:12 PM EDT
Trae Patton/NBC

NBC hit a super high note Tuesday night with the return of America’s Got Talent and The Voice.

Got Talent delivered 15 million viewers — its most-watched premiere ever — along with a 4.2 adult demo rating that’s up 17 percent from last summer’s Got Talent debut.

At 10 p.m., The Voice had 14.4 million viewers — its most-watched episode yet — along with a 4.9 adult demo rating, up 29 percent from last week and marking its best-rated episode in four weeks.

The viewership records and demo gains were against ABC’s NBA Finals coverage of the Dallas Mavericks at Miami Heat (11.8 million, 5.5), which edged the network into beating NBC for the nightly win despite the high-flying reality shows. The NBA game was the highest-rated Game 1 of the finals since 2004.

NBC’s Got Talent performance was likely helped by not facing Fox’s Hell’s Kitchen and ABC’s Wipeout like it did during last summer’s debut, but still… these are fantastic ratings for summer programming. I suspect promoting the return of Got Talent during The Voice during May sweeps helped re-launch the veteran hit, while Got Talent in turn boosted The Voice with its strong reality lead-in.

Between Hell’s and So You Think You Can Dance, Fox normally wins the summer in the adult demo (and I wouldn’t be surprised if MasterChef returned strong). But with Got Talent paired with The Voice, NBC could give the network a run for its money this year.