The largest comeback was the Michigan State Spartans against the Northwestern Wildcats, in Evanston, IL on October 21, 2006. Michigan State trailed 24 - 3 at halftime and 38 - 3 in the third quarter. They scored 14 points in the third quarter and 24 in the fourth quarter to win the game.
The biggest comeback in NBA history was done by the Utah Jazz, who came back from 36 points down to win on November 27th, 1996. The Sacramento Kings have the second largest comeback, coming back from 35 down to win 102-98 against the Chicago Bulls. This happened recently, on December 22nd, 2009.
It was Kirk Cousins who said 'You like that?'. He said it after the end of a game where he led a 24 point comeback, the largest in Redskins history, to win against the Buccaneers.
the Buffalo Bills and the Houston Oilers played January 3, 1993. It featured the Bills recovering from a 32-point deficit to win in overtime, and it remains the largest comeback in NFL history.
The Mets overcame an 8 run deficit in 1972 to beat Houston
1991 Nevada - Weber State 35 point comeback for Nevada to win the game.