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.

Arrested Development Quotes

I am having a love affair with this ice cream sandwich.

George Sr.

The zero hour, Michael. It's the end of the line. I'm the firstborn. Sick of playing second fiddle. Always third in line for everything. Tired of finishing fourth. Being the fifth wheel. There are six things I'm mad about, and I'm taking over.

Gob