Right, we really are nearly there with Ubuntu now!
I have a new Ubuntu-compatible HP printer on it's way shortly, so the switch over is imminent.
As a side note, I'm not the only one. CIO has an article about John Halamka's evaluation of Windows XP, Mac OSX, SUSE Linux, Redhat/Fedora Linux, and Ubuntu Linux for Intel-based hardware - specifically mobile laptops. Actually, it's a series of three articles, but they're well worth a complete read. Most telling is that, despite a few glitches and workarounds, he's ditched XP and sticking with MacOSX for home (read: 'fun') use, and Ubuntu 7.04 (Feisty Fawn) for work.