Soul Man", long before it was covered by the Blues Brothers. But they weren't one-hit wonders, their greatest hits disc is fantastic high-energy music from beginning to end.
This Saturday's "dash of happy" is "Hold On, I'm Coming", my favorite Sam & Dave song. I remember hearing it for the first time at a college party and grabbing my friend and demanding to know the name of the song and who sang it.
I couldn't possibly hear that opening horn riff and not start moving. And the double entendres available from the lyrics just make it that much more fun.