I have Ubuntu 9.04 Jaunty Jackalope 64bit and wanted to give Google Chrome Browser a try to see what it feels like to be running Google Chrome OS (which will be based on Linux and run Google Chrome Browser).
UPDATE Nov 21: Just adding the repository:
deb http://dl.google.com/linux/deb/ stable main
will let you install Google Chrome right from Synaptic.
UPDATE: Now I have Ubuntu Karmic Koala (9.10) alpha 4 and same works for Karmic too.