Any exotic.
In particular, the new mini lambo (cant spell it)
Any Porka, hell I drove down the coast to see the GT when it was down there. *note they have BIG BIG BIG MOFO breaks!*
Bentlys, I really like them a lot.
Any cefiro, but thats just to see what the others look like.
And finaly anything rare, like say a HSV SV99, that sorta stuff, limited runs of cars.
Two Id like to note tho are I once saw a Audi quatro 5cyl turbo, like the old B class rally ones, but the road going version, I nearly had to pull over. And the flat nose 911 I once saw (rather rare).
Add to that any sleeper, I luuurrrvee the sleepers.