Well, these aren't funny per se, but they are cool and I get no end of amusement out of them.
First up. Cats In Sinks. Exactly what it sounds like. Pictures of cats in sinks.
Cats In Sinks
Cast In Sinks exists in cooperation/conjunction/something with another site I love: Kitten War! Sort of a who has the cutest kitten kind of deal.
Kitten War!
I suppose while on the subject of amusing cats I should share this article about a cat that inexplicably turned pink. Has a picture. Second link has a better picture.
White cat turns pink
the cat that turned pink
And just to stay at least a little on the topic of funny links I offer this:
Gangsta Gadgets