brainfuck

i heard about this language a couple of times. i wiki'd it and i guess its for "fun", but whats a "fun" way to use it?

I wrote a tic-tac-toe program in BF.
BF's purpose is that it's the smallest known Turing-complete language (or rather, it's possible to write a compiler for it in the fewest amount of lines).

Links I found in my bookmarks folder you might want to check out:
http://www.hugi.scene.org/compo/compoold.htm#compo6
http://sourceforge.net/forum/forum.php?forum_id=201037