What to do if you are not a fan of the "Summer Olympic Games," continuing on NBC (Channel 2) at 7:30 tonight? Try some trips through TV time.
At 8:30, for example, ABC (Channel 13) repeats its nostalgic spring special, "The Happy Days Reunion," bringing together Ron Howard, Henry Winkler and other principals of the 1974-84 nostalgia series about '60s teens attending Jefferson High School in Milwaukee.
And at 10 p.m., ABC also repeats "MTV 10," its November anniversary salute to the 10-year-old cable service that popularized the music video format, with George Michael, Michael Jackson, Madonna, Aerosmith and R.E.M. among the featured guests.
The strong Monday lineup that helped propel CBS from the ratings doldrums last season also has some particularly good encore episodes.
At 8 o'clock (on Channel 11), "Evening Shade" wraps up the three-show sequence ending in the splicing of Evan (Hal Holbrook) and Fontana Beausoleil (Linda Gehringer).
Some people thought the mid-season episode of "Murphy Brown" at 9 p.m. was a hoot, although Media Monitor found the plot, in which Murphy (Candice Bergen) invaded a male bonding workshop, to be more farcical than satirical.
But the "Northern Exposure" at 10 was a winner, as Shelly (Cynthia Geary) gets a visit from her carefree, biker-dating mother (Wendy Schaal), who is taken by most people to be Shelly's sister -- and her younger sister at that. Meanwhile, Joel (Rob Morrow) finds a baby abandoned in his waiting room.
Going back much further, an episode of "Get Smart" on cable's Nick At Nite (9 o'clock) offers nostalgia within nostalgia. For Robert Culp has a cameo in "Die, Spy," spoofing the 1965-68 series "I Spy," in which Culp co-starred with Bill Cosby.
On the movie marquee is "Five Easy Pieces," at 8 on WBFF-Channel 45. Remember the 1970 film? Jack Nicholson, whose smaller part in "Easy Rider" a year earlier earned this starring role, plays a pianist/oil rig worker who has left his past behind. Karen Black is his girlfriend who knows nothing of his privileged roots.
Also from the big screen, cable's TNT has back-to-back boffo musical movies, with Lee Marvin, Clint Eastwood and Jean Seberg in "Paint Your Wagon" at 8 o'clock and Howard Keel and Jane Powell in "Seven Brides for Seven Brothers" at 11:15.
* THE SECRET CRIME -- The PBS series "P.O.V.", showcasing the work of independent filmmakers, tonight (at 10, Maryland Public Television) offers Rhea Gavry's documentary "Promise Not to Tell."
The film examines a 1987 case of alleged child sexual abuse in a Salt Lake City suburb, in which a 10-year-old girl accused her father.