SCTV's good material is bafflingly unavailable on home video; you can get a 3-disc set called The Early Years, but there's nothing in there from the first season, when Harold Ramis was in the cast as well as the head writer, and it includes only a couple of episodes from the second season, before John Candy and Catherine O'Hara split. It kept going downhill thereafter.
But thanks to Youtube, these late 70's episodes from their prime are available for our enjoyment. A standout is the episode-long parody of 'Fantasy Island', a piece of inspired, surreal idiocy from beginning to end. It's only 40 seconds in that "Patoo" starts uncontrollably fondling himself in an erotic frenzy, and it gets stranger: