Crash Team Racing
The original Spryo The Dragon - Still playing it on emulator along with 2 and 3, but I do remember laying in a hospital bed playing it for the first time from a Playstation 1 system the hospital owned. I was about 6 or 7 years old. I guess the nurses wanted to keep me entertained lol.
The original Spiderman game
Twisted Metal: Small Brawl
Conker's Bad Fur Day
Call Of Duty: World At War - Only because I love World War II history. I always play the German on multiplayer lol.
Super Street Fighter IV - M. Bison all the way! lol
And right now I am really enjoying MW3 & Saints Row: The Third, but I really don't know if I could consider 'em favorites.
Sorry, I know I was only suppose to list 5 lol.