1) Barry Sanders: Started one season and broke 29 NCAA records and as far as I know still holds the single season rushing and all-purpose yards record. Oh and they didn't play 12 and 13 game seasons then. Averaged 238 rushing yards per effing game, people (295 total yards per game). Damn you Thurman Thomas.
2) Archie Griffin: Two Heismans. No further explanation needed.
3) Bo Jackson: A devastating combination of speed and power. Had he chosen someone other than Auburn, then maybe he'd be #2, but no higher.
4) Marshall Faulk: His performance in the pros solidifies the legitimacy of his performance in college. No, it just wasn't because SDSU played mediocre defenses. Damn you Curley Hallman.
5) Herschel Walker: Every college football fan knows his name and his stats. He was so good that Ole Miss fans chanted his name as he whipped their team. He finished as the runner up to the Heisman as a sophomore (Marcus Allen won it) and won it his junior year.
6) Ricky Williams: Played like a man among boys. Broke the career collegiate rushing record.
7) Red Grange: October 18, 1924 (yeah, I had to look it up) as a freshman he returns a kickoff 95 yards for a TD and scores three more touchdowns totaling 167 yards in the next twelve minutes of gametime against a Michigan defense that had only given up four touchdowns the previous two seasons.
8) Ernie Nevers: Another old school player that once scored all six touchdowns and four extra points to drop 40 points on the Bears. Excelled in baseball as well. When Glenn (Pop) Warner was asked to choose the best football player of all time between two guys he coached (Nevers and Jon Thorpe) he went with Nevers.
Both Grange and Nevers stand out in an era where all players went both ways in subpar equipment, thus shortening their careers.
9) Ron Dayne: See #6 but dressed in red.
10) Marcus Allen: The first college running back to break the 2,000 yard barrier deserves mention. Averaged 36 carries a game in 1981, still the NCAA record.
Snubbed because I had to pick ten: OJ Simpson, Mike Rozier, Tony Dorsett, Charles White, Byron White, Doak Walker, Earl Campbell and Ed Marinaro.