VIDEO : 3 Stars You Completely Forgot Appeared On Law & Order

In entertainment, guest appearances on Law & Order are almost considered mandatory. Pretty much anyone who is anyone has been featured on the series through years. Sometimes actors popped up on the procedural franchise prior to hitting the big time. On other occasions, the powers-that-be were able to convince a notable star to appear on the show. Either way, there are some big stars you probably forgot appeared an an episode. Stephen Colbert played a counter-fitter in 2004.