TONIGHT'S MUST-SEE

"Rock Star: Supernova" finale, 7 p.m., CBS. All we know for sure is that the winner won't be American-born. The last such prospect, Storm Susan Large, was ousted last week. That leaves contestants from South Africa (Dilana Robichaux, 33), Australia (Toby Rand, 28), Canada (Lukas Rossi, 29) and Iceland (Magni Asgeirsson, 28). Tonight, one will win.

"Jimmy Kimmel Live's All-Star Salute to 'Jimmy Kimmel Live,' " 9 p.m., ABC. The title alone is enough to interest us in this one. Kimmel hosts and throws out lots of clips. ABC isn't listing the "all-stars," except to say the Kimmel regulars will be featured. They include Uncle Frank, Aunt Chippy, Cousin Sal and Security Guard Guillermo.

OF NOTE

"Dancing With the Stars," 7 p.m., ABC. The seasons merge. As "Rock Star" ends, "Dancing" has its first results show.

"Bones," 7 p.m., Fox. A 17-year-old honor student disappeared with his girlfriend, a 15-year-old dropout. Now his skeleton has been found and Brennan is on the case. That comes as her new boss (Tamara Taylor) tries to fire her.

"Justice," 8 p.m., Fox. The slick, dream-team law firm finds it must dial back its approach for a trial in sedate Orange County.

"ABC Sneak Peek: The Dramas," 8 p.m., ABC. There's a lot of turf to cover in this half-hour. ABC not only has some of the best returning dramas ("Lost," "Grey's Anatomy") but also has new ones that are deep and demanding. "Six Degrees," "The Nine" and "Brothers & Sisters" have large casts and tangled relationships. They debut soon, so ABC tries to stir interest.

"ABC Sneak Peek: Comedy and Reality," 8:30 p.m., ABC. The first part should be easy enough: Pathetically, ABC opens the season with only two situation comedies — the terrific "Help Me Help You" and the odd "Knights of Prosperity." It has other things to round out this half-hour. There are comedies waiting in reserve, plus reality shows and two dramas ("Desperate Housewives" and "Ugly Betty") that ABC claims are comedies.

"CSI: NY," 9 p.m., CBS. As Mac faces a bomb threat, he flashes back to a bombing in 1983 Beirut.

"Law & Order," 9 p.m., NBC. Witnesses are being killed, and McCoy may be in danger.

"American Masters: Preston Sturges: The Rise and Fall of an American Genius," 10 p.m., PBS. Preston Sturges was almost 30 before he decided to become a playwright. He soon moved on to Hollywood, where his films — "Sullivan's Travels," "The Great McGinty," "The Lady Eve" — were known for humanity and humor. His own life was crippled by divorces, tax troubles, and films that failed financially, but his movie legacy is huge. This documentary — a 1990 Emmy winner — makes rich use of clips.