I recently saw Standing in the Shadows of Motown (finally). Great documentary. I could have done without the performances from current pop stars (barring Bootsy, of course), but other than that, super interesting look into the Motown house band.
I wasn't aware that Jr. Walker and the All-Stars were a Motown group. Coincidentally, I picked up two of their LPs from Jerry's Fine Used Records when I was in Pittsburgh last week (amongst other things, of course).
This is simply one of the coolest songs of all time.