What's On Tonight: Idol, Lost, Poker

• At 8, FOX has the two-hour season finale of American Idol.
• Discovery has a new Hazard Pay at 8.
• More John Wayne movies on TMC at 8: Island in the Sky and The High and The Mighty.
• HBO has the documentary Wide Awake at 8, about a man's bout with insomnia.
• At 9, ABC has the two-hour season finale of Lost.
• The Travel Channel has a new World Poker Tour at 9.
• BBC America has a new Perfect Housewives at 9.
• At 10, NBC has a new Dateline.
• There's a new Hustle on AMC at 10.
• Bravo has a new Shear Genius at 10.
• Also at 10: History Channel has a new Modern Marvels.

Check your local TV listings for more.