America's Got Talent (7 p.m., Ch. 5): The 10 remaining acts perform; viewers vote; five will be eliminated on Thursday.
Live From Lincoln Center (7 p.m., Ch. 7): James Galway performs as part of the New York Philharmonic's opening gala.
Bones (7 p.m., Ch. 13): A dog-fighting ring is investigated.
20/20 (8 p.m., Ch. 4): A two-hour report about the British royal family. Because we just can't know too much about those wacky Windsors.
'Til Death (8 p.m., Ch. 13): Is Eddie having a mid-life crisis? (See story below.)
Los Lonely Boys: Cottonfields and Crossroads (8:30 p.m., Ch. 7): This 90-minute show mixes performance footage with interviews that trace the Boys' rise to fame.
MythBusters (10 p.m., Discovery): Would you believe a water-powered stun gun?
Man vs. Wild (11 p.m., Discovery): Bear Grylls recounts various survival methods from past episodes.