Here's mine in no particular numerical order:
10:
Honda S2000
Probably the only Honda I would even think of owning. Still a damn good car even after 10 years of production with minimal changes.
9.
Ford Fusion
Proved an American car company could produce an affordable mid size sedan with good quality that wasn't a penalty box to drive, and could go head to head with the best from Japan, Korea, and the rest of the world.
8.
Cadillac CTS-V
A ZR-1 in a tuxedo.
7.
Chevrolet Cobalt SS
260 turbocharged horses and a Nurburgring tuned suspension.
6.
Ford SVT F150 Lightning
Successor to the Lightning of the '90's. This one reached a whole new level of performance that rivaled alot of sports cars, yet it was still useful as a truck.
5.
Chevrolt Trailblazer SS
A Corvette that can haul the whole family around and tow the boat to the lake.
4.
Ford Mustang
Not the first retro car, but definately one of, if not the most successful retro cars. Also the first all-new Mustang since 1979, this car definately had alot of bang for the buck to go along with it's good looks.
3.
International CXT
In a decade that brought $4+/gallon gas and global warming alarmism, International introduced the CXT, a big metal middle finger to Al Gore. Largest vehicle you could drive on a regular drivers license. (designed specifically to be 1 pound under CDL requirement.)
2.
Chevrolet Corvette C6, Z06, ZR-1
Included all versions of the C6 here as they are all awesome. Able to beat cars that cost 2-3x as much, while being comfortable enough for daily driving and returning reasonable mpg.
1.
Ford GT
Modern reincarnation of the one from the 60's that whooped Ferrari. Similar to the Corvette as it's performance rivaled much more expensive cars.