If you're from Columbus OH, or if you're just passing through, we recommend My Big Fat Gyro (it's at 4989 Chatterton Rd.) The portions were huge and the food was delicious, and on top of that the staff was really nice. None of it was even remotely healthy, so don't even hope, but this was the best place we ate on the whole trip.
The one sad thing was that they had to chain down their tip jar, because people were stealing it so often. Seriously, don't steal tip jars. Who does that? Assholes, that's who. Just don't.