Dr Katz predates Home Movies by several years. But yea it's mostly the same people, sans Brendan Small. It's also awesome. The segments with guest comedians as patients are sort of hit and miss but the show overall was great.
I have the box set of dr katz on DVD, and it gets exponentially better with each passing season. By the time I got to this part I was in tears from laughing. The flaming turkey gets me every time. Also Dr Katz's expression when he is talking about lying about it being a successful evening gives me the major giggles.