Bob Gunton and Lisa Banes were credited but did not appear in part 1 of Off-Season Greetings.

Owen is suffering from an aortic aneurysm, a swelling of the aorta to greater than 1.5 times normal.

Ken Keller: I loved that joke invitation by the way.
Hank: What joke invitation?
Ken Keller: The one that said four grown men were going to dinner at Tao and Spiderman on Broadway.
Hank: That's not a joke. Evan didn't want a party. Since Paige came into his life, he's outgrown certain behavior.
Ken Keller: Of course he said he didn't want a party. It's called plausible deniability.
Hank: What?
Ken Keller: As best man, your job isn't to give him what he says he wants, it's to give him what he needs. Booze and booty.

Paige: I just wish there were more guests on the Lawson side of the aisle.
Hank: Owen's still coming, right?
Paige: Who's Owen?
Hank: His mom was our mom's cousin, but they lived in Wisconsin, so we're distant in all ways.
Evan: You are marrying into a tiny but elite clan.
Hank: Yes. Minus the elite part.

Divya: Why have I never met you before?
Winnie Gordon: Um, well, things have been a little awkward. Uh, I'm the girl Hank dumped right before he got engaged.
Divya: I didn't know. I am so sorry, I...
Winnie Gordon: No, no. Don't be. I've moved on, and I guess Hank has too, or else my baking for the wedding would be weird for him.
Evan: It may still be weird for him.
Winnie Gordon: You didn't tell him?

Divya: It's not that you have a son... It's that you kept it from me.
Rafa: I was afraid that would scare you off. Our relationship was so new. (Sighs) I am sorry I hurt you. But if you will give me a chance, I can prove that my feelings are true.

Evan: So that endovascular thing, it's pretty pricey, right?
Hank: You do our billing. You know about medical expenses.
Evan: Yeah, I just wonder if Owen has insurance, that's all.

Evan: Hey! You made it!
Eddie R. Lawson: It's my son's wedding. This is all about family. Of course I made it.
Hank: Where's grandpa?
Eddie R. Lawson: He didn't make it.

Ken Keller: (to Hank) What do you want, Wuthering Heights?

Wuthering Heights is a novel published in 1847 about a passionate but ultimately doomed love story.

Owen: (to Hank) But don't worry, because I am on the Lipitor.

Lipitor is a drug used for lowering cholesterol.

Florian Hostetler: (to Hank) I hope you have fully recovered from the explosion.

In episode 4x14, Sand Legs, Hank was injured when an explosion rocked Boris' home as Hank was rushing towards the house where he suspected Boris was trapped inside.