Here are some thoughts ...
- Dark Forces rocks, but it isn't a Jedi game, so never mind.
- Jedi Knight has the best story of the lot (aside from the whole Dark side power struggle inconsistency thing), and has some of the best level design in any game ever. But it is PC-only, so you'd need Bootcamp.
- Mysteries of the Sith (expansion for JK) - ditto above. 15 hour expansion to a FPS? That is more than twice as long as the average FPS these days!
- Jedi Knight II - a worthy successor. The biggest flaw is the 'Evil Barney the Purple Dinosaur' villain ... but in terms of design, story and gameplay it is a wonderful experience that has aged very well.
- Jedi Academy tried to take the gameplay of JKII and the choices from JK and make a new direction. And if it wasn't for the adolescent story and a couple of the characters it could have worked. There are some superb levels and some average ones. The saber combat is even better than JKII.