I'm most curious about input tablets, eg. Wacom, and whether their headers would be usable from FB. I think it's called Wintab.
My (admittedly cheap) tablet does mouse emulation. Don't more expensive tablets do this as well?
More expensive tablets also have variable pressure and multiple brushes.
I want one. Those things are great for Photoshop... there also very good for airbrushing vertices in Lightwave. I might just buy one if someone ports that lib.
It's not really mouse emulation I'm interested in (although that's been a nice side-bonus of having one, given that the trackpad on this lappy is odd at times) but rather making use of the pen-sensitivity and such within a program, which sounds kinda cool to me.