I can recall the following;
CZ - 5x125s, 1x175 trail, 2x250 singles
Jawa - 2x350 solos, 1x350 outfit
BSA - 1xA10 outfit, 1xC15
Triumph - 1xT20 Tiger Cub
MZ - 1xTS250
Kawasaki - 2xER5s
Honda - 1xXBR500, 1xSLR650
Suzuki - 1xGS550, 1xGN400
Yamaha - 1xXVS950, 1xSR400
Royal Enfield - 1x350 Bullet {Indian}
BMW - 1xR80, 1xR1100, 3xK100, 2xF650 {1 of which is current}
I'm sure there were more but that seems a fair remembering of the main ones.
Biggest Lemon? Got to be the GS550. Best bike? Whichever one I'm on at the minute!
Ian