Harrison Ford played the president of the United States once -- and he was the most badass president the big screen has ever seen. Not only was he believable as the commander-in-chief, he was believable as a commander-in-chief who would risk his life, grab a machine gun and shoot up the bad guys for the good of the country. But that's Ford for you: a man so grumpy that even as a president he's willing to dole out a little ass-kicking to back up his anti-terrorism initiative.