My favorite episode (aside from episode 9 from both seasons) is the one where he convinces the gang to paint over their grafitti, and to flush their drugs down the toilet now so the cops won't get them later. Brilliant on so many levels.
Everyone I've shown this show to has been completely mind blinded.
I really think the DVD set is the best thing I've ever bought. I already had burnt copies of it, too. I just had to have the real thing. Never felt like that before. But this show.. fuck! Lifechanging and shit.