Re: Oh and as for the other films you mentioned
If you didn't like Animal House as an adult I can sort of understand, but there are two pleasures to be found that make it watchable at an older age: 1)Landis gets more than one would think out of a tiny budget; 2)you have to watch it realizing that it's a cynical, embittered, late-70s perspective on a by-then-nostalgified-to-death time period (American Graffiti and Happy Days and all the nostalgia-for-the-pre-Kennedy-assassination-era thing had already been going for several years, and AG was set in 1962 just like AH).
I remember thinking Caddyshack was okay but have never felt like rewatching it much. I'm not sure why it's so enduring. I think the Ted Knight character made me laugh more than Chase, Murray or Dangerfield. The kid from the movie went on to play the loathsome dumbass, Fred, on Roseanne.
I wonder if history will remember that TSAM started a tidal wave of mostly-forgotten gross out flicks to be followed in the next few years.