There are many actors who play a role so well it's impossible to see anyone else replacing them. Here are 12 of these actors and their signature roles.

Animation companies Hanna-Barbera and Ruby-Spears spent decades capitalizing off of the popularity of 'Scooby-Doo' with ridiculous ripoffs.

The thief's costume choice amused social media users, who responded with their own Scooby-Doo jokes.