in chronological order:
no idea
S3 crap
Geforce 440mx
Geforce 5200fx, sure knew how to pick emm...
*discovered anandtech*
Radeon 9800PRO
Radeon X1900XT
Geforce 7900GTO
Radeon 5850
Random cards in other experiments/older rigs:
Matrox millenium G400, couldnt play starcraft 1 without stuttering
Geforce 4 Ti 200
Geforce something that came with mac G4