Neat stuff! It will be interesting to see what goodness comes from this. I like digimuzik's idea for two finger gesture light control. I also think it would be cool to be able to remove the Personal banner from personal docs.
It does not look like android is running underneath (more linux focused) so I'm assuming android apps will not run. I enjoyed having dropbox on my Nook Touch for example.
Anyway, congratulations! I'm going to try to resist the temptation to hack this time but I rarely seem to win that battle