A Gulf GTR (the 96 livery I think) is in the classic SEGA Arcade game 'Scud Race'
http://www.youtube.com/watch?v=eSA6z19XPV0
There was a Bigazzi GTR in Enthusia Professional Racing as well.
http://www.youtube.com/watch?v=VZNDHZMhn48
rFactor and GTR/2/Evo/etc have had F1's made for them.