Dennis Creevey -> Jack is accosted by a pint sized wizard...who is entirely brilliant.

The Twins, Izzy & Eli -> The Twin discover that the Time Agency doesn't exist anymore and Jack gives them a job.

Freya Goodwin -> Freya's first official act since moving to Torchwood from UNIT?  Clean up.  Eek!

Ashley Magnus -> Jack could use a soldier and hunter like her!

Ryan Sharp -> Crack hacker, she was caught breaking into UNIT's database.  Jack's offering her a way out.

Dave Lister -> Owen and Jack are out around town poking for new leads as to where the werewolves came from and stumble across Dave.

Sam Winchester -> Dabble Ianto meets Sam over werewolves too!

Nathan Petrelli -->  Jack's out stalking werewolves the night that Drippy Ianto and Owen decide to joyride in his car.  He runs across a very strange creature stalking Nathan.