Saw these RJ fan fiction shorts. I only read one, the one where Jack meets Doctor Who, and thought it amusing--obviously nowhere near FPW's level of prose. If you are into John D. MacDonald and Travis McGee (I'm a fanatic) there's a neat little McGee/Buffy the Vampire Slayer crossover called Chosen Hazel Eyes that's nicely done.
The links don't seem to work, so go to: fanfiction.net and type Repairman Jack into the upper right search box.