Game designers are creative people...but sometimes, they get lazy. That's when we start seeing video game characters who look just like celebrities.
What do you think? Does the second guy in your family in Family Feud on the Genesis look like Chuck Norris [wiki]?
You can read the piece here. Found at Digg.
There are a lot of cases like these (especially in 8/16-bit games), but these ones are bad examples... Many games in the eighties featured complete movie poster ripoffs as their title/loading screens for example :-)
http://image.com.com/gamespot/images/2002/news/10/07/rygar_screen016.jpg
http://image.com.com/gamespot/images/2002/playstation2/rygar/ry_screen019.jpg