Let's just cut to the chase.
* "Nova" (8 p.m.-9 p.m., MPT, Channels 22 and 67) -- This is a real-life chiller, thanks to a "Nova" film crew that spent four weeks in Zaire chronicling an outbreak of the deadly Ebola virus. PBS.
* "Coach" (8:30 p.m.-9 p.m., WMAR, Channel 2) -- Tim Conway guest-stars as an inept gardener. As long as he's not in character as Dorf. ABC.
* "Frasier" (9 p.m.-9:30 p.m., WBAL, Channel 11) -- Niles finally gets his chance with Daphne? Must be more to this than meets the eye NBC.
* "Home Improvement" (9 p.m.-9:30 p.m., WMAR, Channel 2) -- Jill and Tim decide they've got as big a family as they want, so Jill persuades Tim to have a vasectomy. Funny, if predictable. ABC.
* "NYPD Blue" (10 p.m.-11 p.m., WMAR, Channel 2) -- Earlier this season, the father of Detective Russell (Kim Delaney) was shown as a man prone to domestic violence. Tonight he's murdered, possibly by one of the family members he's been abusing. ABC.
* "Late Show with David Letterman" (11:35 p.m.-12:35 a.m., WJZ, Channel 13) -- For years, David Letterman has mocked Joan Collins. Tonight, she's finally appearing on his show. This should definitely prove interesting. CBS.
* "Polly of the Circus" (9:30 a.m.-11 a.m., TCM) -- So, you watched PBS' "The Battle over Citizen Kane" and are wondering what all the fuss over Marion Davies was about? Watch her play a trapeze artist in this 1932 film to get an idea.
* "American Hot Wax" (4:30 p.m.-6 p.m., HBO) -- Here's marvelous film about the early days of rock and roll, centering on concerts staged by pioneering disc jockey Alan Freed. This flick may not be history, but it sure is fun.
* "Goddess of Love" (2 p.m.-4 p.m., Lifetime) -- Here's proof Vanna White should stick to turning letters.
* "Bedtime for Bonzo" (11 p.m.-12:30 a.m., AMC) -- Ronald Reagan and a chimp? You make your own joke; political satirists have been doing so for years. Actually, it's a pretty clever film.