Announcing squrl.us
A colleague of mine at Applied Information Sciences, Oskar Austegard, just announced squrl.us on his blog at mo.notono.us Squrl does a few more things than your average short URL generator.
For example, when I entered the URL for one of my blog pages, squrl generated:
translated: http://t.squrl.us/2t (if your original site is in English, this won't work due to how Google works)
Check it out, but be nice to the rodents :)