As cheesy as it feels to add a Narrator as a character, it definitely makes sense for Arrested Development.  Ron Howard, the producer of the show, narrates the show and even appears on screen in a cameo.  He sometimes tells the facts, sometimes makes stuff up, but is always there to keep you entertained.

Narrator Quotes

Tobias recently lost his medical license for administering C.P.R. to a person who, as it turns out, was not having a heart attack.

Narrator

Narrator: And Michael finds it difficult to get his father out of jail.
Michael: You love it here?
George Sr.: Oh, I'm having the time of my life. Hey, T-Bone.

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Arrested Development Quotes

Um, I forget their name, but I know they're hungry. I think some are thirsty.

Lindsay

(talking about the money their fund-raiser brought in) Well, most of that money was from the Bluth Company. I mean, how ...
(Michael looks surprised) ... are you?

Tobias