Last week, Mad Magazine announced that, due to the slumping economy and declining sales, it will go from being a monthly publication to a quarterly publication. Yes, them worry. And we worry, too. The slow, impending death of Mad signals the end of an era, one in which most funny adults owe at least some of their sense of humor to greats like Al Jaffee and Mort Drucker.

After the jump, a by no means comprehensive collection of great stuff from Mad throughout the years. It's difficult to find good images from the mag online, so if you know of any others, leave links in the comments.

This image, filed under the "Bashin' of the Christ Dept.," depicts a campaign ad George W. Bush would air were he running against Jesus Christ. Oftentimes Mad's satire is funnier and more incisive than what you'll find in most "grown-up" magazines on any newsstand you come across. (Click to enlarge)

Occasionally the humor was less subtle.

And let's not forget the gross-out jokes. (Click to enlarge)

One thing Mad is very good at is not talking down to its young readers. In 1968, as war raged in Vietnam, the magazine addressed the subject head-on with this signature fold-in. The hidden answer to the question, "What is the one thing most school dropouts are sure to become?": "Cannon fodder." (Click to enlarge)

Movie stars are frequently roasted just as bad, if not worse, than politicians. (Click to enlarge)

Irreverent, but not unpatriotic. This was Mad's cover following the September 11 attacks.

The Bush administration took their share of shots from Mad. But they made it so easy.

And already Barack Obama is getting his. What a criminal shame that one of the most unbiased outlets of political commentary currently on the market is a children's humor magazine. Oh, Mad, we'll miss you so.