I'm pretty sure I've posted this on the site somewhere in the past, but I couldn't find it.
Anyways, there is a site out there that allows you to be the GM of your favorite team, and pick for them. In addition, you can trade picks as well.
At the end of the draft, you get a grade to see how well you did.
Its not very realistic in the sense of how often you can trade down, or certain players being available, but its still very addictive, and fun to play.
With our draft not too far away, I thought I'd share.
http://first-pick.com/
The Draft Simulation Game
The Draft Simulation Game
AFFL- Raiders
MLBSA- Tigers
WLSB- Marlins
MLBSA- Tigers
WLSB- Marlins