I can't tell you how much I'm looking forward to this movie.
Between being a fan of the earlier movies written by Charlie Kaufman (Being John Malkovich and Adaptation), and the feeling that this is going to be in the same vein as Chain of Fools, the fact that Elijah Wood is in it, the fact that Tom Wilkinson is in it (was also in Chain of Fools), the parts of the script I've read, and the great teaser promos... I don't know which is the biggest reason I'm excited, but - I am!
Here's a link to a review (found at BEI): http://www.slantmagazine.com/film/film_review.asp?ID=959
Warning: there are spoilers. I especially suggest you not read the last two paragraphs or you'll know too much about the beginning of the movie, and it's probably something better seen without knowing what's going on...
Release Date: March 19, 2004 (limited)