'90 Mazda Miata.
The first year I had this car was rough due to the amount of repairs it needed (made my 944 look dirt cheap!) but once I got the bugs worked out of it, it has been a very solid, reliable car. Easy to work on, too.
It's a blast to drive, easy to park, fairly good on fuel (not as good in the winter, but not horrible) and fun in the snow with my snow tires. Unfortunately, it's not quite as good on the long road trips, but I have another car for that task.
This may end up becoming my track flogger if I get a "grown up" car down the road, but currently I suffer from "automotive ADHD" with my plans, so we'll see how that goes...
BB.