Yeah. I'm about as big a diehard fan as there is, and I haven't ever watched the finale more than once. I always stop watching after Only One Sydney Bristow...because I'm weak.

I do like the rest of S5, though--particularly seeing Syd as a mentor to Rachel and a friend to Renee. Also, Tom is cute.

IMO, S5 works a lot better upon rewatch, actually, because you already know the new characters and can get into their stories more. Of course, YMMV.