Is there any chance to put another OS on the iPad?
It would be a great way to get an Android tablet with a proper 4:3 display and good speakers. Or why not run X11 on it, and LOCAL applications (or VNC and a local install of android or a regular Linux).
Also, once jailbroken, is there a way to make the Music/Video/Photo apps recognise files that were loaded on using SSH rather than iTunes?
A) You need to crosscompile for the CPU, probably not that hard given the existing cross compilers, but still a non-trivial task.
B) You need drivers for the Apple hardware. Not impossible, but then neither was getting to the moon. Good luck pulling this off in an open source project where most of the developers would rather be hacking android, or doing the insane like trying to put KDE Plasma on a tablet.
C) You need to reflash the device. Not sure of the difficulty of this, not my field.
So short of a team of rocket-scientist quality linux gurus with money to burn on hardware I don't see it happening, not when there are more interesting things to do with Android.
(That said, I've had the same sort of fantasy for the past three years... sometimes I cry myself to sleep at night wishing Apple had learned from being too closed for so long... well not really, but you get the picture. N.B. While I'm typing this on my Mac with an iPad on the couch next to me, my Win7 game machine is humming away happily in the corner and without moving I can see three old laptops with various linux distributions lying around. I try not to be a zealot for any camp and I believe in using the best tool for the job. Apple builds some awesome hardware, but sometimes I think their heads are so far up their asses they have not seen the light of day in years.)