Coulrophobia is the fear of clowns...

Gurdy the Clown.

"The Laugh".

Tiny Tim (who is already one creepy dude) plays an even creepier clown named "Mervo".

Haven't seen this yet but it's either "Bippo" or "Cheezo" I think.

Don't know the names. Sorry, this is the only screen shot I could find.

Horny the Clown.

Shivers the Clown.

Punchy the Clown.

John Wayne Gacy.

Young Michael Myers. Like in the original 1978 movie, his first kills were made while he was dressed as a freaking clown.

Young Michael Myers.

This thing is just referred to as "Evil Clown".

Captain Spaulding.

Pennywise the Dancing Clown.

The Killer Klowns from Outer Space.

"Kill Joy" (there was also a Killjoy 2 and 3 if you can believe it).

Buster the Clown (from the episode "We all Scream for Ice Cream, which I am cool enough to own! :) )

Mr. Jingles.

Referred to simply as "Clown".

That evil clown doll that becomes "possessed" by spirits and attacks Robbie. Poor kid.

I have no idea what the clown in this is called. His name doesn't seem to be mentioned in the credits and I couldn't find a screen cap either.

This guy is just referred to as "Clown".

I think his name is Ollie.

Captain Spaulding.

Dissecto.

Sorry, couldn't find a screen shot.

"The Clown" (sorry no screen caps available that I could find online).