Hey guys, in case anybody is interested I have a breakdown of Justin Smoak's swing mechanics here:

Justin Smoak 

I know he is a long shot to fall to the Nationals, but I think he would be a clear choice for if he were to fall.  I found this tidbit from Baseball Prospectus via the McCovey Chronicals:

College first basemen are the most valuable group of draft picks by an enormous margin. College first basemen selected in the first round have gone on to have Hall of Fame-caliber careers approximately one-third of the time.