Humor Anthologies

I have:

Created in Darkness by Troubled Americans [from McSweeneys]
Fierce Pajamas [from The New Yorker]
Laughing Matters [edited by Gene Shalit]
May Contain Nuts [edited by Michael J. Rosen]
More Mirth of a Nation [also edited by Michael J. Rosen]

and I am going to buy:

Mirth of a Nation [Rosen]
The Oxford Book of Humorous Prose

and I would like to know if anyone can suggest some more humor anthologies to check out.

They were all pretty even. A couple pieces were a little more cerebral (not a bad thing), and there were a few that weren't to my liking, but the collections were consistent overall.