Ten Great Doctor Who Spin-off Stories

I have a confession to make. I've been playing away.

To celebrate its relaunch, scyfilove.com asked if I'd like to contribute a guest post and inevitably I agreed and decided to write about Doctor Who and choose one of the nerdier topics. And so I present:

Ten Great Doctor Who Spin-off Stories

That's spin-off in the old sense (before Jack and Sarah), audio plays, novels and comics strips. As you'd imagine it's a fairly esoteric selection ... Comments? Suggestions?