Twin Peaks is in a league of it's own. I've never met anyone who wasn't drawn into it almost right away (even people who didn't see it the first time around). Even though the tempo of the show is considerably slower than any of the TV series aired now. Guess it's Lynch's ability to build suspense with small means.
OTOH, I haven't met anyone who thought it was particularly good after the mid 2nd season revealing of the murderer either.