In the "Born to Be Riled" book Clarkson rated the best three cars in the world:
1. Ferrari 355
2. An Aston i think
3. Nissan Skyline GTR
He actually apologised for the GTR because it was that damn good he had to leave out the Jags, Corvette's, Lambo's, Alfa's, Hondas, TVR's etc etc. from the list of amazing cars. He added it wasn't much looks-wise but could be thrown "into corners at absurd speeds" and that warranted it's inclusion.
Speaks for itself. Starwars says more though.