I'm pretty sure this is actress Melora Walters.
http://www.imdb.com/name/nm0001828/
Although I can't identify the program it is sourced from.

I recognize her as George's girlfriend from the "shrinkage" episode of Seinfeld (a k a, "The Hamptons").

And a series role she had on a show called "L.A. Doctors"

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EDIT: Actually it's not her, it's another actress, listed below.