During some research into the Flying Spaghetti Monster (may he touch me with his noodly appendage) which I needed for a college project - I came across a number of parody religions I hadn't heard of before.
They all cater to my odd brand of humour, and from what I know of everyone here - should definately raise a few laughs.
These are mostly wiki articles, so you should probably only look if you don't have anything important to do.
Bobby Henderson's
original letter to the Kansas School Board, detailing the Flying Spaghetti Monster.
The Church of the
SubGenius.
Frisbeetarianism.
Last ThursdayismThe Invisible Pink UnicornMaybe not seen as another parody religion, but
Russell's Teapot demonstrates the point that they generally try to get across.
And finally - not really a part of the parody religion list, but relevant and funny nonetheless,
Project Steve.