Powerful Acting in Fresh Prince of Bel-Air

I have never been a big fan of the Fresh Prince of Bel-Air. I know plenty about it and most of the opening song but if somebody showed me this incredible display of acting sooner it would have had me hooked.
Will Smith needs more dramatic roles. MIB3 was crap anyway.

The video below is from ep.424 and is some of the best acting I've ever seen.