I've had a few so I may miss some.

05 G35 6MT Sedan (current)
00 Miata (current) It's normally aspirated but not stock!
93 Ford Aerostar (current)
88 Ford Aerostar (current) More of a storage shed at this point than a vehicle though.
92 Miata
00 Mercury Cougar 5spd (could not STAND this car)
92 Nissan Maxima SE 5 spd
89 MR2 Supercharged (Started out as 145 bhp, 2600 lbs, ended up 227 rwhp, 2240 lbs)
94 Econoline E250
86 Mustang
Some Mercury Tempo POS
85 MR2
First Gen Monte Carlo
74? Toyota Corolla 4spd rwd. Loved to drift this car in the snow with it's mighty 75(ish) hp.
78 Ford Futura (started out as a six but dropped a Mustang 302 in it)
70 something Mazda RX3 station wagon. Great car. Made lots of guys with mid 70's Camaros look silly.
25+ MGB's and GTs of various years between 67 and 74 (NO rubber bumpered cars allowed!). I do remember having 17 at one time when I was renting a 40x40 garage on 2 acres of fenced in lot.
Part owner of a 1939 Packard Clipper Limo that had belonged to the Mexican Consulate in AZ during it better days.
67 Ford Econoline
70 Honda N600
67 Fiat 850 Spyder
67 K-code notch back Mustang
60 & 62 Sunbeam Alpines (these were my first car at 14)
Before that I had a 14' fiberglass ski boat with a 40 hp Evinrude. It doesn't sound like much but I was 13 and it would pull two skiers up on one ski with two people in the boat.
And my very first powered vehicle (at 12) was a Dart Cart (go-kart) with a 5hp Briggs and Stratton engine. I saved my paper route money for an entire year to buy it.

I'm sure I'm forgetting some.

 

2004 G35x sedan
2000 Honda Accord SE
1990 Toyota 4 runner
1990 Toyota Camry SW
1986 Oldsmobile Cutlass
1989 Chevrolet Cavalier RS

needless to say the G is my favorite haha

 

2001 Honda accord, 2005 G35X Sedan, 2006 Infiniti G35 Coupe (current).

After my sedan was totaled I had to find a new car in two months. Sat in a G coupe and knew it was the car I wanted right away. Medium mileage garaged car I couldn't pass on.

 

2007 Infiniti G35 Coupe (MT)
1998 Honda Prelude SH (MT)
1987 Toyota Supra Turbo (MT)
2004 Honda Civic LX Sedan (MT)
2003 Nissan 350z (AT)
-This is the point where I repaid my parents for my first car and started buying with my own money-
2000 Nissan Maxima (AT)
1999 Ford Contour (AT)

 

I want to participate.-
16 yrs old first car- 74 Toyota corolla liftback ( should've kept this car... would be so bad *** now)
86.5 Toyota Supra N/A 5sp ( this is the car that infected me with mod bug)
91 Integra DA B16A swap
85 Toyota Van 5sp RWD ( this was a go anywhere with anyone bucket. was so fun.. many memories)
90 Toyota camry 5sp with a 5sfe swap
92 Eagle Talon TSI FWD ( 400whp, Borg n warner 57 trim, 25 psi/ Stock JDM cyclone motor)
93 Plymouth Laser RS AWD ( end up selling after couldn't register it)
94 Honda Civic VX (JDM D15 w/ JDM LSD- 13.8 1/4 on street tires from a SOHC)
86 Toyota 4runner 4WD 5sp 22re ( was fun for off roading)
91 Toyota MR2 N/A ( extensive suspension mods/previous Solo2 contender)
91 Mazda Miata ( first time drifting got big... was a fun toy)
93 Integra DA stock ( my daily driver)
92 Eagle Talon TSI AWD ( 325 AWHP on stock 14B/ 20 psi peak 17psi steady/ fully forged built/DSM link /dyno tune by myself)
91 Toyota Supra Turbo 5sp ( fully forged built 3.1 on stock ct26 10psi/ 300whp 302 ft lb torque... this was one of my favorite build)
*05 G35 coupe 6MT ( currently still own)
94 Miata B package ( hell flushed and clean)
94 Prelude DOHC VTEC 5sp ( got to love the H22a motor and its power under the curve)
05 Mercedes C230 supercharged ( not alot of support and had to fab my own parts)( not a cheap brand to maintain)
*13 Hyundai Sonata SE 2.4L ( lowered and custom dual greddy exhaust.. not a bad DD at all)( currently owns)

I miss owning obd1 category vehicles.

 

Great list!