Diagnosis Murder (8 p.m., CBS) cashes in on Regismania with a rerun of an episode from a couple of years ago in which Reege and Kathie Lee play talk-show hosts whose ratings stunt ends in murder. Weaver finds out the real reason Dr. Lawrence (Alan Alda) left his last position on a rerun of ER (10 p.m., NBC). The new drama series Wonderland (10 p.m., ABC) premieres. Actor-producer Peter Berg (formerly of "Chicago Hope") created (but doesn't appear in) this series about the staff of a New York hospital's psychiatric unit. Michelle Forbes ("Homicide") and Martin Donovan head the cast.
The documentary Cancer: Evolution to Revolution (8 p.m., HBO) looks at advances in medical efforts to fight the disease and provides advice on prevention, detection and treatment options. The 1996 comedy The Cable Guy (8 p.m., Fox) has its first network showing. Jim Carrey plays a psychotic cable installer who stalks nice guy Matthew Broderick. The reviews were unkind but it's really not bad, especially the faux cable programming interludes provided by Ben Stiller, and a medieval restaurant interlude with Janeane Garofalo.
NIT (7 p.m., ESPN)
Penguins at Capitals (7 p.m., ESPN2)
Rosie O'Donnell (syndicated) Jimmy Smits, John Cusack
David Letterman (CBS) John Cusack
Jay Leno (NBC) Meg Ryan, Little Richard (rerun)
Politically Incorrect (ABC) Carl Hiaasen, Tim Stack
Conan O'Brien (NBC) Mike Myers, Julian Lennon (rerun)
Craig Kilborn (CBS) Chyna, Lit