Ubuntu finally won my heart after a two year love-affair with Gentoo, but I wasn’t sure I wanted to risk breaking my install to move from Hoary Hedgehog (version) to Breezy Badger. Luckily, Chris pointed out that you can upgrade in-place with apt-get. I’ll be chasing badgers soon, once these slow repositories get me upgraded 
I can almost taste that sweet, sweet badger meat on the camp fire. Yummers 
BreezyUpgradeNotes – Ubuntu Wiki
Beaver tastes better
[sorry, couldn't help myself]