Here we go... only cars ive really driven, no parts cars counted.
1 - 1977 Oldsmobile Delta 88, had a chevy 350 with a 350 turbo. This was truly my first car. I bought it from a neighbor for $150 when I was 13, it needed a starter and a battery. My dad loaned me the $150 and let me borrow the parts to get it running. I drove it around the yard and learned how to powerslide and do powerbrake burnouts. I had actually totally forgotten this car until a good convo a night or two ago. The car got licensed and used as a daily beater by my dad for a while and eventually had the engine and trans pulled to be put in another vehicle.
2 - 1984 Chevy S10. Iron Duke with a 4 speed. Learned to drive stick on this at 14. Was supposed to be my first vehicle until I got a job and saved enough to do a 50/50 match with my dad to get the next car:
3 - 1993 Chevy Beretta GT - bought in June of 2000, now pictured in my sig. It's something entirely different now, myself and the authorities are still trying to determine what it is.
4 - 1978 Oldsmobile Delta 88 Brougham - late 2001. Blue couch cruiser, was my concert rig for a short period of time after being inspired by some movies...
5 - 1989 Beretta GTU - black on grey (mint dash) - 5 speed with digi cluster. Bought in early 2002 for various reasons. Primarily for GFX. Driven, parked, resurrected, wrecked, semi repaired - sold to a community member with a car yet to be numbered.
6 - 1987 Chevy Celebrity - 2.5 auto... bought for $50 off of a guy my who worked for my dad. He told me it didn't run, I showed up with a new battery, 2 gallons of gas and an air tank and drove it home 25 minutes later. (featured in the slowest racing video of all time

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http://www.berettaspeed.com/downloads/download.php?id=5 - getting whooped) I drove it with black xlaces and it eventually sold for $250.
7. 1994 Cavalier - 2.2 5 speed. Served as my $500 car for winter '03. Fun little turd, got nicknamed the shitrocket. Sold for $200 with a shattered diff.
8. 1999 Cavy Z24 - bought 7/2004, white, 5 speed, mods, good car. Sold to another member of the community, 7/2010.
9. Another 1989 GTU - Black on maroon, 5 speed with digi dash. Was going to be the parts car to resurrect the first 89 GTU. I drove this for awhile and eventually it was sold as a package with the other.
10. 1988 Old 98 Regency - blue on blue. $500 winter car - turned into total pimp mobile. Rocked a set of 16" 99 Monte Z34 wheels, had the auto leveling air suspension. Wonderful car. Eventually sold to a friend.
11. 1990 Beretta GT - 3.1 5 speed - bought from a friend for $500. Proved a good friend and eventually donated its guts to car #1.
12. 1998 Lumina LTZ - a current member of the stable, and a damn fine daily driver with its leather interior and 3800 series 2 boat anchor.
13. 1993 Beretta GT - white on gray - bought in 11/2010 for $1000. Added more white paint and my black crosslaces to the mix. Currently on down time awaiting 3400 top end swap with mild port work, custom tune, and more mods.
That's it I think. 13 cars that I've had and driven for some period of time. This doesn't count 3 Beretta parts cars.