So I got the Wacom Bamboo Create Tablet and I'm in love. I can write notes on my computer, annotate pdfs, draw pictures, it's wonderful!
The only issue is that the tablet picks up both the pen and my hand leaning on the tablet, so I wrote a short script to give me a GUI toggle to turn the touchpad part on and off. This works for my machine running Ubuntu 11.10.
The code can be found here: http://elizabethmunch.com/BambooTouchToggle.py