Heres another thing that popped up a couple years ago.

http://www.albinoblacksheep.com/text/leet

You can changed the % of "leetness" and if you choose alternate characters you end up with some of the same characters as this topic's Alt Code Typer. I like this better because I don't have to install another random program.

I would appreciate it if you guys didn't post in weird characters anywhere on this forum other than this topic.