There's also Defending Elysium, and Centrifugal that are generally available. As well as I hate Dragons which isn't complete yet. (Here's another version). This was a short story he started for a Writing Excuses exercise. (Also, for the lazy, a link to Firstborn.)
OH! And the short story he co-authored in Armored. I forgot about that one...
As for things he has sent out when asked, there was Mistborn Prime and Final Empire Prime, White Sand, and some early versions of Scribbler (which now will be published next year). There were a couple of others I've heard of people receiving, but I'm not sure if it was a "I'll send this to anyone who asks" or something else.