Wouldn't you love to know what he might've bought, though?

I don't know how far his scifi geekery extends beyond Who, and I would imagine he pretty much gets a free copy of anything Who he wants (within reason; I doubt Millennium is sending him free cyber-heads). He's at least something of an other-SF buff, or he wouldn't have been so into Quatermass. I don't know how much US SF he digs on, I guess I should say.