Wow. Half-surprised to not see a thread on this yet.
I think that may be one of the absolute worst episodes of The Simpsons, ever. Possibly worse than the Armin Tamzarian episode. Homer's father is a British lifeguard? C'mon.
I'm a long time Simpsons fan, but even I'm starting to think it's time for them to move on and either get new material or just let the show die.
The couch scene, though, was great.