I own a 'cube, and decided to drop $50 on "Enter the Matrix".
Worth the money?
ABSOLUTELY (if you enjoyed 'reloaded').
It fills in 'side stories' that happen parallel to the movie. Keep in mind that the Warchoski's (sp?) sold the rights to the game before they wrote the script, so the game's story is streamlined from the movie so it flows VERY well.
The graphics aren't Doom3 (or even UT), but they are the best you could do if you are going to simultaenously release a game to all 3 platforms AND to the PC. The gameplay is superb, and the story is top notch. I found that its a tad easy (I would expect it to be much harder), but really stays true to the movie.
One other thing is that I'm getting a little past Reloaded and am afraid to go on (don't want to ruin 'Revolutions' before I see it).
Offtopic: Surak put up some undocumented recent slashdot changes that some of you may be interested in.