They say "it starts up front" in football, meaning a team's success starts with the play of its offensive line. The big uglies up front are crucial, because they affect the team's offense and ability to score points. If the offensive line can't open up holes for the running game or protect the quarterback, not only does the offense have major problems, but so does the entire team.
This is why you see many programs (cough-Alabama-cough) invest heavily in their offensive line. Programs scour the trail looking for great offensive trench men to bring to campus. The Crimson Tide had one of the best OL units in recent history last year, and if you think Johnny Manziel's success wasn't helped by great OL play, then you're wrong.
For the following piece, I'm going to look at the top 10 programs who are most likely to build the next dominant OL unit.