South Park

A little bit of Comedy Central's scatological smash South Park goes a long way — so on these three one-hour tapes, two episodes on each, there's enough to last the average person a lifetime. Taken sequentially, these cassettes contain an awful lot of chaff on the way to those few grains of comedic gold; wise viewers will head directly to Volume 2, with ''Weight Gain 4000'' (about Kathie Lee Gifford, among other things) and ''Big Gay Al's Big Gay Boat Ride'' (about homosexual pets). Between episodes, creators Trey Parker and Matt Stone appear in ostensibly parodic, gratingly self-indulgent interview segments. Volume 1: C- Volume 2: B+ Volume 3: B