I worked for an Audi dealer when they came out and got to drive a European spec one Audi sent us for the auto show here in Pittsburgh. Taking it through town from the convention center to meet the truck to bring it back to Michigan, ad guy riding his bike did a double take and slammed into the curb when he saw it.
Everyone is in awe of the V10, but the 4.2 V8 sounds 100 times better.
The R8 is one of my all time favorite cars and it's first on my list of cars to buy if I ever hit lottery.