Star Wars: Movie Duels is a single player Jedi Academy: Total Conversion. Movie Duels will let you relive the most famous duels from Star Wars Episode 1, 2 and 3.
Painfully detailed.
And somewhat addictive.
This is one of those few serious major work. Let alone being the definitive mod for this game. Even more, it actually improves a lot of what the game originally provided.