Have a ton of NFS4 screens saved in my fraps folder, here are some good ones:
Three astons-Cooya!'s Vantage, DB9 and ML's Vanquish on Cliffside Rally
LOL
959, ML's F50, Viktor Ding's M6 on North Country
Two of MLs best on Dolphin Valley
Diablo GT, X-Nemesis' Veyron, ANPs CC8s, and an EB110 on Durham City
Viktor Dings 16, Distinctivechris's E60, MLs Murc and an 575M on Vertigo Ridge Vol2
Two MC12s and the HP2 Carrera GT on Autumn Raceway
Know this isnt NFS, but: