Lamborghini Murciélago
Lamborghini Diablo GT
Lamborghini Countach 5000 S (silver, no rear wing)
Lamborghini Miura SV (blue w/ aluminium sills and wheels)
Ferrari F40
Ferrari 575 M (w/ Fiorano handling pack)
Ferrari F355 spyder
Ferrari 330 LMB
Ferrari 250 California Spyder (w/ covered head lights)
McLaren F1 GTR
Why can't I have more, deth?
(In Homer's voice: Only ten?!?)
On a serious note, I would be in heaven with this garage!!! Hell, I would only need this garage, I wouldn't be sitting in the house anymore. That is, when I'm not out driving...
EDIT: the Enzo had to go and was replaced by the F40. The Alfa Romeo Tipo 33 Stradale was thrown out as well (after long and hard thinking), because I simply had to have the McLaren F1 in.