http://www.nfl.com/draft/story/7232005

19. MINNESOTA -- VERNON CAREY, OG. The Vikings would like to take a defensive end here but the best will be gone. Carey can help for a long time and the head coach is a former offensive line coach. The Vikings will get calls to trade down and the money-conscious Vikings will listen.

20. MIAMI -- SHAWN ANDREWS, OT. The Dolphins must fix the offensive line. Even though they have been signing people in free agency, Andrews fits -- especially if Carey is gone.

http://www.nfl.com/draft/profiles/shawn_andrews
Also, interesting pieces on supply vs demand by position:

http://www.nfl.com/draft/story/7236035 where S, OT and OG all have more teams wanting than rated picks