Damn, I hate writing lists! So, in order of hazy memory
Honda SS50 (learnt to ride on this. On reflection, taking some kind of instruction before going up the road might have been wiser)
Puch M50 (paid £8 for it out of someone's garden. Didn't really work properly so used it in a field, painted it black and gold and sold it!)
Honda C90 x 3 (different times, various states of repair, all ran, one with missing screen, brake, MOT, tax...)
Honda 50 (clockwork, only worked on the straights or downhill)
Honda CG125 (fab bike. 50 mile round trip commute every day. Only time it failed was when some git nicked my HT lead. Spent 45 minutes trying to start it before I realised!)
Suzuki TS125 (Egyptian export model. Worked brilliantly, even after being straightened out with a hammer following an over-enthusiastic approach to a sharp bend)
SV650 (my first big bike. Naked model, went on a European touring holiday two weeks after passing test. Spent 10 days developing huge neck muscles trying to keep up with all the faired bikes. My first experience of how to lose money when selling a bike)
Honda VFR750 (painted RVF colours. Comfortable, smooth, fast. Found out it was a Category C write off when tried to trade it in! Second experience of losing money when selling a bike)
Kawasaki ZZR600 (Hated it, most uncomfortable bike ever owned. Failed to notice there was no 5th gear when test riding. See above re: losing money)
Honda Firestorm (Fast and fun. Rubbish brakes and worse fuel economy than a 747. See above re: losing money)
Aprilia Falco (Superb bike. Fast, fun, fab brakes, comfortable for long distances. Lost some of the shiny bits following an incident with wet cobbles and sunken tramlines in Germany. See above re: losing money)
Aprilia Falco (As above, kept the shiny bits intact but strangely, never quite as good as the first one. See above re: losing money)
Yamaha TRX850 (bought as hack bike. Hated it, gave to my partner who loved it until it died a natural death)
Forgot this one! Yamaha FZR400 (Only bike I've ever really tried to highside. Partner refused to take it as the clutch was so stiff. Also have it on good authority that it was so small, it looked like it was going to disappear up my flute! Can't remember now but probably lost money when sold)
Suzuki GSXR750 SRAD (always wanted one so bought as next hack bike. Stupidly fast, dodgy electrics. Fixed all the probems and then sold it! See above re: losing money)
Kawasaki ZX6R (hack bike. Was fun for a little while but got bored as kept running in to it's handling limits. See above re: losing money)
Aprilia RSV1000 (Yay! Came with all the tweaks I'd beeing trying to get in to the Falco. Eventually got fed up with having to concentrate on staying on all the time! See above re: losing money)
Yamaha XJ6S (this is where the YOC came in Eventually lost interest but my partner has it now and she loves it. No money lost!)
Benelli TreK 899 (present bike. I am in love )
Got a feeling I might have missed a couple but I seem to be missing large chunks of teenage memory for some reason...