South Park exploded on the pop culture landscape like a dirty bomb in 1997, and the 13 episodes that comprise the groundbreaking first season have lost none of their subversive impact. If Seinfeld was a show about nothing, then South Park is a show about everything, from important moral lessons in compassion and tolerance to good old-fashioned animated character assassination (Kathie Lee Gifford in "Weight Gain 4000" and Barbra Streisand in "Mecha-Streisand").