Jason Vey, my co-writer on All Tomorrow's Zombies, has just released his latest project: a Doctor Who netbook for Unisystem (the rpg engine for Buffy, All Flesh Must be Eaten and similar games). It's huge, and contains lots of information on the program (through all ten Doctors) with background and game stats, plus a suggested campaign with new characters.
He asked me to write a story to introduce the book, so that's included as well. As befits the nature of the beast, it's basically an excuse to get multiple Doctors and companions together, and maybe spark ideas for a different type of campaign.
All this is to be found on Jason's Doctor Who RPG page.
(I was particularly interested in reading through the summary of all the New Adventure books. Although peripherally involved at the time, I lost track of the big picture so I liked this succinct coverage.)