I guess I really had no idea what I'd think of Clueless on rewatch, it was sort of an impulsive pick. I'd hate to get hit with a significant dollop of depression while watching a movie I *love*.
Nirvana: I don't really need to listen to their albums anymore, but they were pretty definitive in my youth. What I do do, however, is revisit the Nirvana *story* every few years, read a different book or watch a new documentary or something and always sort of find something new. In particular I'm interested in accounts of the early years of the band, such as Jason Everman claiming that Kurt listened to "nothing" in 1989 but Black Sabbath over and over again (remember, Sabbath were not cool at all in 1989!) The tunes? Well....I've heard 'em too many times. And digging through their rarities hasn't been as fun as I'd thought it would be.
D&C: I'll always love this movie but I've watched it so many times, I've probably only watched Animal House more times but that's because I watch AH every Thanksgiving as a little ritual. I could play it from beginning to end in my sleep and I guess I don't really find anything new in it except that I once found the Adam Goldberg character sympathetic and now I think he's a bit annoying.
70s nostalgia has changed little since it broke out in the 90s. I guess to be fair we got lots of bad remakes/continuations of 70s TV shows, and now every 90s show has to make a stupid comeback.