Here's another one for you, although I've not tried it.
Journeys of the Dragon Rider - http://www.mistkeep.com/
There was also an old Dos game (3d vector graphics oh yeah) that had dragon combat, but I cannot locate it at the moment. It was on an abandonware site I cannot locate atm.
Drakan was awesome, both on pc and ps2. Oh and no one has mentioned Lair on the PS3. That's pretty good, although the framerate gets a bit poor at times.
Rakku