I was just thinking about this, and wanted to see what you guys thought. The first THPS was so revolutionary, it blew everything out of the water, any skating game before it was not obsolete, and every one after it never stood a chance (not counting Skate). I loved the series, and was always looking forward to the next installment.
I played them religiously, and when Tony Hawks Underground (THUG) came out, I didnt think the series could ever get better, and boy was I right, every game after it was more gimmicky and less enjoyable than the last. I only made it to Project 8 before giving up completely on the series.
Anyway, my favorite hands down was THUG, the freedom to do goals at your leisure, a (somewhat) engaging story, and the best levels the series had (Moscow anyone?) I put a ton of time into this game, even putting many hours in online (dial-up connection baby!).
So lets remember a simpler time when Tony Hawk was at its peak and people genuinely looked forward to its installments. Lets hear it, whats your favorite THPS game? What did you love about it so much, and when did you finally give up on the series?