TONIGHT'S MUST-SEE

"America's Got Talent," 8:30 p.m., NBC. Thursdays have turned into TV's decision day. It's the time to leap between three networks, seeing who's in and out of reality competition shows. CBS has housemates at 8 p.m. and Fox has dancers at 9. Now it's NBC's turn. On Wednesday, the "Talent" semi-finals began and the judges chose one person to advance to the finals. Afterward, viewers voted for a second person to advance. Tonight, we learn who they chose.

OF NOTE

"Big Brother 7: All-Stars," 7 p.m., CBS. The eliminations begin. Tonight, we learn which of the 14 housemates is the first one ousted.

"The Office," 7:30 p.m., NBC. The rerun is a more-recent episode, with Jim reluctantly becoming Michael's pal and going with him to Hooters.

"My Name is Earl," 7 p.m., NBC. Earl once accidentally sabotaged his dad's mayoral campaign. Now he enters him in a new race. The problem is that the dad (Beau Bridges) no longer wants to be mayor.

"So You Think You Can Dance," 8 p.m., Fox. The field is trimmed to 10. The Pussycat Dolls perform.

"CSI: Crime Scene Investigation," 8 p.m., CBS. A big winner sleeps with a woman he just met as TV winners so often do. The next day, of course, he's found dead.

"Windfall," 9 p.m., NBC. Already in mourning, Sean realizes his money troubles are continuing. Meanwhile, Cameron has trouble at work — squabbling with Peter — and at home, where he admits an affair.

"It's Always Sunny in Philadelphia," 7, 7:30, 8, 8:30 p.m., FX. After being mugged, Dee takes boxing lessons.

TONIGHT ON KHNL NEWS 8

Tonight on K5 News at Nine, we take you to Las Vegas for an insider's look at Hawai'i's favorite vacation destination. Plus, your latest news at 5, 6 and 10 from Howard Dashefsky and Sharie Shima.