Oh and bonus content... here is William Smith fighting Mr. T in "The A-Team" in one of the series' first episodes, in early 1983.

You can see them at the beginning talking to each other in a van, and then fighting each other, despite being friends (the characters, that is) and doing it due to being forced by a corrupt warden.

Laughably, Smith's character (49 at the time of filming) was shown to have a brother, played by Meeno Peluce. How old was Peluce? 12! Why weren't they father and son? TV was so funny in that era with the casting.

(Peluce isn't shown in the below clip, unfortunately.)