Star Wars: Knights of the Old Republic

If KOTOR were made into a movie, it would be the third best movie behind only episodes 4 and 5. It's easily better than any of the prequels and even "Jedi." The story is excellent and the characters are real and fun and you care about them. Being part of the story is fantastic.

KOTOR I is still better than KOTOR II (Sith Lords) mainly because the story in "Sith Lords" doesn't really flow as well. Both are fun, but if you haven't played either yet, play KOTOR first since KOTOR II spoils some of the plot.

I'm sure the graphics will become dated over time (they already are) but the story and game play will stay top-notch for a long time. The music is also excellent and is as good as anything John Williams ever wrote. In fact, it blends with the original Star Wars music seamlessly. The game engine does a very good job of playing the correct thematic music at all times.

The re-playability factor is also good because you can be both good or evil, and male or female. This gives you four versions to play. I recommend saving often just so you can go back and try different things. There is no penalty for saving games and it's fun to see what happens.