Apart from Chromium, there are also Chrome .deb packages:

32 bit: http://www.google.com/chrome/intl/en/eula_dev.html?dl=unstab...

64 bit: http://www.google.com/chrome/intl/en/eula_dev.html?dl=unstab...

I've used the 32 bit package on Ubuntu (9.10 beta) and Debian testing the last weeks, no problems so far.