I usually enjoy intros...only however, if the intro suits the style and mood of the album/band. Early Cradle of Filth albums, the intro's worked perfectly with the music. (Before they became cliche and used just for the purpose of having an intro).
I absolutely hate it when you hear a beautiful (atmospheric, mood indulging) intro, cleary produced, and then the next song is sloppy death metal with the ugliest, dullest production. To me intros like that serve no purpose on an album of that sort.