WEEKEND TV : Imagine a Retrospective on John Lennon

Music, memories, laughter and that rumpled old sleuth Columbo highlight the weekend television lineup.

Ten years after he was murdered outside his New York City apartment building, John Lennon is remembered tonight at 8 on Channel 5 in a two-hour retrospective on his life and music. Paul McCartney, Ringo Starr, Michael Jackson and Billy Joel are among those who will honor the famed musician, songwriter and peace activist. (Please see related story, F8.)

“Jonathan Winters: Magic & Comedy,” tonight at 10 on Showtime, features the master of high-speed improvisation in a special that includes magic tricks, juggling and sword swallowing.

Sunday at 7:30 p.m., Channel 28 will broadcast “Christmas at the Pops.” Ed Asner and soprano Barbara Hendricks team up with John Williams and the Boston Pops in a Yuletide celebration to be simulcast on KUSC-FM (91.5) and KCPB-FM (91.1).

Finally, “Columbo Goes to College” stars Peter Falk in pursuit of two cold-blooded students, Sunday at 9 p.m. on ABC (7)(3)(10)(42).

Other weekend shows include:

TODAY Sen. Sam Nunn (D-Ga.) is interviewed on “Evans & Novak,” 9:30 a.m. and 9:30 p.m. CNN. . . .

Rep. Stephen Solarz (D-N.Y.) joins “The Capital Gang” in a look at Iraq’s release of the hostages, the economy and the politics of the Gulf crisis, 4 p.m. and 8 p.m. CNN. . . .

“The West” checks out San Jose, a 3-year-old prodigy and a cowboy who writes children’s books, 3:30 p.m. (4). . . .

“American Chronicles” goes to a 25th high school reunion in Elmhurst, Ill., 9:30 p.m. (11)(6).

SUNDAY “News Conference” examines the new immigration bill, 6:30 a.m. (4). . . .

“Sunday Today” reports on Dr. Joyce Brothers, a New Jersey family separated by the Persian Gulf crisis and the 75th birthday of Frank Sinatra, 7 a.m. (4)(36) (39). . . .

“Newsmaker Sunday” airs at 7:30 a.m. CNN. . . .

“Sunday Morning” reports on the difficulties of life in Leningrad in the age of glasnost , conductor Joanne Falletta and a halfway house in San Francisco, 8 a.m. (2)(8). . . .

“Meet the Press” airs at 8:30 a.m. (4)(36)(39). . . .

“The McLaughlin Group” talks about the prospects for peace with Iraq, the “family feud” in the Republican party, and West Virginia’s “robo-deer,” 9 a.m (4), 5:30 p.m. (50). . . .

Rep. Ron Wyden (D-Ore.) will discuss life insurance and its availability on “Business World,” 11 a.m. (7)(3)(42). . . .

“This Week With David Brinkley” airs at 11:30 a.m. (7)(3)(42), 10:30 a.m. (10). . . .

“Midday Sunday” examines the Asian myths and folklore associated with sacred mountains, 11 a.m. (11). . . .

“Signs of the Times” profiles graduates of the foster care system, 11:30 a.m. (11). . . . “Face the Nation” airs at 3 p.m. (2), 11:30 p.m. (8). . . .

State Sen. Marian Bergeson (R-Newport Beach) and Assemblyman Terry Friedman (D-Los Angeles) discuss the state budget on “Newsmakers,” 3:30 p.m. (2). . . .

“60 Minutes” reports on used car dealers who roll back odometers; Milwaukee alderman and Black Panther leader Michael McGee; two septuagenarian grandmothers who practice family law for the working poor, 7 p.m. (2)(8).