First recall seeing SRB2 at SAGE 2000. It was that teaser video. Back then I had AOL dialup, so I had to wait 30 minutes to watch it :/
I think I actually got to play SRB2 for the first time when that demo with the Chao, Mega Man and all those characters were in it. I eventually joined the forums in 2003, but never posted. I re-registered sometime in 2004 and that was where my home in SRB2 started. I think my first post was a topic on whether or not recreating Forest from PSO Episode 1 was a good idea or not. What a coincidence, I'm addicted to PSOBB right now :D