I was always liked McCartney's song Band on The Run. It was virtually three distinct songs in one, but they all seemed to build upon each other and sound like they fit together. But one song that always bugged me was Lionel Richie's hit 80's song Say You Say Me. The song has a nice mellow ballad feel until you hit the 2:50 mark, and then bursts into this high energy double time part, then just as quickly fades back to the original melody for the rest of the song. It seems like the songwriter just crammed something in there for the sake of a changeup or an attempt at a hook. Are there other songs like this that have parts that don't seem to fit?