I'm an autocross addict with an STX-prepped e30 325i, zinno/black. I know, I know, it's NOT the car for the class. Doesn't matter, I love it.
Just picked up my 318is, brillant/black, for a daily driver and I absolutely love it now too.
Basically, e30s are my favorite car going. I've got lots of cars that I love dearly -- MGA, Dino 246GT, 3.0CS, 2002, '67 Mustang fastback -- but the e30 has turned out to be MY car.
A few quick shots:
The 318is ...


The family car:

The family autocross car:

Bicycling ...

Another four-pot e30 (not mine) I used to autocross:
