Weird... I have seen Paprika, and liked it a lot.
I bought it as a gift for a friend (DVD), and he also likes it.
While I agree that the plot is convoluted, I liked the dream like quality of it. Little by little dreams and nightmares start getting real and the normal world end been one with the dreams. Is kind of surreal, and the real plot wasn't lost to me at the end.
Is a weird movie, but I like weird!