Godzilla 2000 was the first, and only, Godzilla film that I have seen in theaters (GINO doesn't count). I was 8 at the time and the only theater that was showing it in my area was in Harrisburg (about an hour drive from my home) and my mom drove me to see it on opening day. Unfortunately the theater was only about 1/3rds full and they decided to stop showing it the next week (though I did get the full sized poster for free from the theater, which I still have on my wall).
I enjoyed it, I still do. I recently got the DVD and I've just watched it with the commentary and some of the design choices by the US director are very interesting, and logical.
Oh and despite the fact that I know it isn't, it still feel like Megaguirus is a sequel to it.