YMMV: Welcome Back, Kotter

  • Hilarious in Hindsight: John Travolta would later spend a whole movie with a rubber hose up his nose.
  • Vindicated by Cable: Somewhat. After its original lackluster syndication in the early 80s, the show fell into obsucrity in the US until Nick At Night and TV Land added it to their line-ups in the mid to late 90s. The episode with George Carlin was picked for Malcolm Bondon's Ultimate Fan Hour.