Well that sure didn’t take long. Someone from among the XDA-Developers faithful has successfully installed Ubuntu on a Galaxy Tab. Granted, he did use the same instructions used to install it on a Galaxy S Epic 4G, and it’s really not that surprising that it worked.
However, for those of you that love to install secondary operating systems on your devices, this may be right up your alley. If you want to try this out, check out this thread for instructions and support, but be careful!