I am not a big celeb follower so I don't know if he does this often, but apparently Leonardo DiCaprio was wearing the block M cap at the iron man opening. http://www.showbizspy.com/wp-content/gallery/leodic/ctr-000031.jpg
Don't ask me how I came upon this, it was a yahoo link.
Love to see random people in Michigan, Lions, Tigers, etc. hats