Memphis belle ABC's Elizabeth Vargas may be from New Jersey, but her heart belongs to Memphis. First, she marries Marc Cohn, the guy who warbled "Walking to Memphis" for an entire summer. Now, she's traveling to the Tennessee town for "20/20" (9 p.m. today, KSTP, Ch. 5) to find out why it has the nation's highest infant mortality rate.

Top adviser Dear Abby may have soothed a lot of broken hearts, but I'll bet she never tackled a good ol' fashioned whodunit. Leave the crimefighting to "Dear Prudence" (8 p.m. Saturday, Hallmark), an advice columnist who plays detective during her Wyoming vacation. Star Jane Seymour plans to reprise the character indefinitely or at least until CBS brings back Dr. Quinn.

The party's over The cheering is almost over. "The Olympics Closing Ceremony" (6 p.m. Sunday, KARE, Ch. 11) will feature the traditional affairs: the passing of the Olympic flag to the mayor of London (the next host city), the extinguishing of the flame, the last march of the athletes -- and the raid on Michael Phelps' Speedo collection.

Zzzzzzzzzzzz "Z Rock" (10:30 p.m. Sunday, IFC) follows the misadventures of a hard-rockin' club band forced to pay the bills by doing kiddie parties. Unfortunately, neither version is very talented -- or funny. Some unlikely guest stars, including Joan Rivers and John Popper, stop by, presumably with earplugs. If this is supposed to be a reprisal of "Spinal Tap," then turn it all the way down to "2."

NEAL JUSTIN