Sonic 1, 2, and 3 are some of the best games ever.
YAY Sega Genesis!
On FPS'..... I STILL prefer Medal of Honor. Killzone 2 and Bioshock get honorable mentions as well. And Call of Juarez : Bound in Blood is pretty sweet too.
Not really. SonicCD was basically a harder, faster, slightly more awesome version of Sonic 3. I prefer S3 though, its nowhere near as retardedly difficult