We've seen mock drafts where the Cleveland Browns select Baylor quarterback Robert Griffin III before, but in Sports Illustrated's most recent mock draft, Don Banks changes things up a little. Banks proposes that the Browns will use their extra first-round pick acquired from the Atlanta Falcons to trade to the St. Louis Rams to move up from No. 4 to No. 2 and take RGIII with the second overall pick.
The Browns have the need and the extra first-round pick to move up and land RG III, and for that they can thank Falcons general manager Thomas Dimitroff, who reeled in Julio Jones with Cleveland's 2011 first-round slot. Washington and Miami figure to be in the same market for the Heisman winner, but if the Rams deal with the AFC-based Browns they wouldn't have to face Griffin as often.
I personally don't see the need for the Browns to trade away a first-round pick to move ahead of the Minnesota Vikings, especially considering the Vikings just selected Christian Ponder in last year's draft, but crazier things have happened.