The entire album is incredible, but I would say Videotape. Simply awesome. The syncopation is great even if I haven't looked into it much. I honestly thought the repetiotnnof "in videotape" was weird but now its really grown on me. The entire album has really grown on me, my first listen I thought it was good but nothing special. Now its one of my favorite albums of all time. Kid A is still the best Radiohead album, though.