First things first. Let’s get this whole controversy bit out of the way. Ben Stiller’s Hollywood action satire, Tropic Thunder, has drawn the ire of a number of groups representing the mentally disabled. The offense is taken at a plot point which has Stiller’s Tugg Speedman, an action hero desperate to be taken seriously, playing a character in the mold of Sean Penn’s in I Am Sam. Speedman’s performance in this past role is a…