Aardvark: Must have Firefox Extension

Any discussion on Firefox Extension recommendations must include the obligatory "Firebug is the most amazing tool ever" note. (Because it's really fantastically useful, and it just keeps getting better)

Today, I'd like to mention Aardvark. It's super useful for isolating parts of the page for easy printing, and quite easy to use, once you learn the keystrokes. I use it all the time for printing out comics and lolcats for posting on my cubical walls.