NCAA men's basketball tournament (Ch. 2): Kansas vs. Portland State (10:25 a.m.); Kent State vs. UNLV (approx. 12:45 p.m.); BYU vs. Texas A&M (5:25 p.m.); Arizona vs. West Virginia (approx. 7:30 p.m.)

Miss Guided (7 and 7:30 p.m., Ch. 4): Ashton Kutcher (who's one of this show's executive producers) guest stars as the hot substitute teacher; a student's blog creates drama for the entire school.

Live From Lincoln Center (7 p.m., Ch. 7): A performance of Puccini's Madame Butterfly.

Smallville (7 p.m., Ch. 30): Lionel has Clark kidnapped and held in a kryptonite-lined cell.

Lost (8 p.m., Ch. 4): So what, exactly, is Michael doing on the freighter?

Reaper (8 p.m., Ch. 30): Sam is increasingly convinced that Cady is the devil's daughter.

NBA (8:30 p.m., TNT): Lakers at Jazz

Lipstick Jungle (9 p.m., Ch. 5): Nico's husband has a heart attack.