I am as conservative about the Simpsons as Ned Flanders is about everything. Nothing weird or out of character, thank you very much. Don't leave Springfield, and don't introduce someone from outside Springfield. No guest voices, playing themselves or otherwise.
I really love this episode because it's all Springfield regulars and regular Springfield places. Flanders as the Simpsons' landlord is such a seemingly obvious plot. I'm amazed they haven't already done it.
More importantly, they don't botch it. The jokes are mostly well written, and Homer doesn't over-deliver everything.
I'm gonna try to savor this triumphant episode before "The Simpsons are going to Ireland!"