This has to be the all-time classic Ferrari. I love the way Ferrari tapered the top of the car to create "hips" on the rear. The Testarossa, and it's later version the F-512, and then the F-512m are featured in nearly every racing game ever! In my opinion, this is one of the nicest cars that Ferrari ever produced. Also, a bit of trivia here, Don Johnson drove one on his old show: Miami Vice!!!
Here are some pics:
On the later model of the Testarossa (the 512), note how the grill and the spoiler are now different.
Note how the grille is starting to take the shape of the current Ferrari grille on this 512tr.
Here's an odd colour on a Ferrari: