If you're going to Wonder Con this weekend in San Francisco, you should stop by Booth #242, as they're giving away free Iron Man 2 mini-posters of Scarlett Johansson as Natasha Romanoff/Black Widow while supplies last.  If you'd like to see what the poster looks like, hit the jump.

Also, I'll be at Wonder Con for the first time this weekend, so expect plenty of interviews from San Francisco on Friday/Saturday/Sunday.  For more info on Wonder Con, click here.