eGO hosted Insurgency servers (the mod... not the standalone that is out right now) from the beginning, and had this awesome dust2 map ported over to play.
The game was glitchy, messy, and insanely fun. eGO had the best servers that were busy all the time and tons of fun. I played a bunch then someone invited me to join the group.
Funny part - guy who recruited me turned out to be impersonating admins the entire time. But I guess he was useful.