This is what every talk-show appearance should really be like.

Jason Segel hit 'The Late Show' last night to talk about some pretty basic bits -- how and why he lost weight for 'Sex Tape,' his theory on chip intake at Mexican restaurants, host David Letterman's wonderful pronunciation of "taco," and all that jazz -- before getting to the real meat of the appearance: the sandwich meat, if you will.

What starts as a chat about why Segel quit Twitter years ago (something about how people were upset that he tweeted his love of sandwiches over burritos) turns into a discussion between the actor and Letterman on their favorite sandwiches. They even start ranking them. Turns out, Segel is kind of a classic sandwich guy, while Letterman goes a bit hardcore with his condiments, and -- oh, yeah -- now you're hungry.

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