CHIME NOISES INTENSIFY
Yeah I've rewatched a couple episodes in the past when I felt nostalgic, and while they weren't as good as I remembered, they were still pretty good. A lot of it was the voices, actually, as Ash's tends to change, and I forgot how high May's voice was (also Brock's was different). I didn't rewatch an entire season, just choice episode that I missed.
They seemed somewhat more childish (though not overly so) so I definitely didn't enjoy them as much as I originally did. That being said, they still were really fun to watch. :D