Alton Lister's stint with the Celts at the end of his career comes to mind. It was an awful team, but Alton was still busting his hump out there. Always admired him for that.
There were a bunch of guys in the ML years...Brett Szabo, Blue Edwards (aka - the scoring threat

).
Going back a ways...Akim Abdul Aziz, Thomas Hamilton, Jeff Judkins, and the mercurial Conner Henry.
If we're counting preseason rosters I'd have to add Sasha Danilovic and of course Kevin Pittsnogle

btw - the Greg Kite photo is awesome!