It has Bill Murray, Sharon Stone, Frances Conroy, Jessica Lange, Tilda Swinton, Julie Delpy, good music, an interesting storyline, an award from the Cannes Film Festival and good reviews.
What more can you ask for?
The only downside I can see is if you saw "Shaft", you might have a hard time separating the character Jeffrey Wright plays in "Shaft" from his part, as Bill Murray's neighbor, in "Broken Flowers". I'll have to watch the movie to see...
