Next, there are countless examples of Jokers from decks of playing cards (including a special sub-section of pin-up girl jokers):

I've found dozens of examples of slot machines and online slot games that have Joker in their name:

And finally, The Joker as depicted in comic books, cartoons, TV shows and movies over the years:

[Chip images 9 and 15 appear courtesy of the ChipGuide]