Ted Ginn. He was a threat to take it to the house any time he had the ball. Reception, punt return, or kick return. An absolute nightmare for any defense. Him, Holmes, and Gonzalez had to be tough to prepare for.
Edit: Maybe I'm a little biased because meeting and watching him in person was what converted me from being a TTUN fan to a buckeye fan as a little kid.
This is also one of my favorite videos on YouTube.