Today and tonight, TV is just horsing around. This afternoon, ABC presents the annual Kentucky Derby -- and tonight, no network is presenting anything serious, or seriously worth watching.
* "The Kentucky Derby." (4:30 p.m.-6 p.m., WJZ, Channel 13) -- The horses run, very rapidly, for 1 1/4 miles -- an exciting event which ABC annually stretches into a 90-minute TV special. Who's really finishing first here? ABC.
* "The Mommies." (8 p.m.-8:30 p.m., WMAR, Channel 2) -- Big weekend for Beverly Johnson: Tonight she's one of several supermodels making cameo appearances on "The Mommies," and tomorrow night she concludes a two-part appearance on "Lois & Clark: The New Adventures of Superman." NBC.
* "The Rocketeer." (8 p.m.-10 p.m., WJZ, Channel 13) -- What took this 1991 movie so long to get to broadcast TV? It's a wonderful little family film: good special effects, a nice story, and a scene-stealing supporting performance by Alan Arkin as an eccentric inventor (no, he doesn't invent eccentrics). Bill Campbell, Jennifer Connelly star. ABC.
* "Saturday Night Live" (11:30 p.m.-1 a.m., WMAR, Channel 2) -- John Goodman is the guest host, and the Pretenders are back together and appearing as the musical guests. NBC.
* "Shelley Duvall's Faerie Tale Theatre." (6 p.m.-7 p.m., DIS) -- Another great repeat: Tom Conti and Liza Minnelli in "The Princess and the Pea." Mr. Conti, in particular, is a hoot, as is Tim Kazurinsky, who plays the fool. Literally.
* "Made in America." (8 p.m.-9:55 p.m., HBO) -- How time flies. This movie was made last year, and was the spark that set fire to the passions of co-stars Ted Danson and Whoopi Goldberg. A year later, with "Made in America" premiering on cable, the couple has long since called it quits. Shouldn't these show-biz, love-at-first-sight-on-the-movie-set romances last at least as long as it takes for the film to get to to TV?
* "Guinevere." (8 p.m.-10 p.m., LIF) -- In this new cable made-for-TV movie, Sean Patrick Flanery, who played the elder of the two boys on "The Young Indiana Jones Chronicles," plays King Arthur, and Sheryl Lee stars in the title role -- two very good reasons to watch.
* "Duckman." (10:30 p.m.-11 p.m., USA) -- Teri Garr guest stars or her voice does, anyway. This show being what it is, there's no telling what her character, a high-school principal, will look like, or even what species it'll be.