http://www.engadget.com/2009/12/17/n...-for-starters/
http://www.wired.com/gadgetlab/2009/12/nook-run-apps/
Looks like thats already happening. Obviously doesn't look like an "everyman hack" yet. But that will probably come eventually.
*Ah I see you already mentioned nookdevs. Sorry I only read your post here first, then posted and then read your blog lol.