Worst singing in a movie theme song?

[Lydia Leftcoast]

I thought up this category the other night when my local PBS station showed the original version of The Thomas Crown Affair with Steve McQueen and Faye Dunaway. It was a fun movie, and I knew that its theme music was "Windmills of Your Mind" by Michel LeGrand, but I had heard the tune only as an instrumental. In that version, the tune was monotonous, but smooth and flowing like a river.

However, I heard it sung with words for the first time, and after the first few bars, all I wanted to know was, "Who IS that annoying singer?" The tempo and phrasing were just plain awkward.

Well, I watched the credits carefully and learned that the singer was Noel Harrison. Younger DUers may not know who that is, but he's the son of Rex Harrison (Henry Higgins in My Fair Lady), and for a while in the 1960s, he was being promoted as some kind of mod matinee idol in a turtleneck. Haing heard him sing that theme song, I now understand why his career never took off.

What movie theme song performances do you really dislike?