He did nail the alienated lonely nerd cat owner thing.

And Yar.

Heyooooooo!

My wife and I still have the line, "I will feed him" as a private joke between us.

That part of Worf's backstory seems like something the writers deeply regretted. They dealt with it by completely ignoring it, so Worf is somehow totally ignorant of basic facts about the planet he grew up on.

Seems like a normal human not-cat-person to me.

I think they generally did a good job of showing how Worf is that way, not because he's Klingon, but because he's just a guy who naturally has a stick up his ass.

He's more severe than most Klingons, both because he's felt the need to affirm his heritage ever since he was a child, and because he's just generally grumpy and anti-social. His parents are in at least one episode, and it's implied that they're such easy-going and cheerful people that Worf probably tried to be the opposite as a form of asserting his independence. Other Klingons raised on Earth or in Starfleet are much more approachable. Every time they visit Kronos, it's clear that Worf is much more into "the Klingon way of life" than his own people.

...you know, I haven't even watched an episode in years. I've only seen most episodes once. Yet I could probably go on about Worf for hours more than the work I'm supposed to be an expert on.