The Invisible Enemy, which shows how vicious the Ewoks should have been.
A Great And Majestic Empire, a machinima done with the Jedi Knight/Outcast game engines is really funny. Sadly they disbanded before creating the final episode. : (
IMPS:The Relentless is the unofficial continuation of Troops, following different squadrons throughout the Empire.
And of course the grandaddy of them all, Hardware Wars from 1978.