Danica McKellar to Guest Star on The Big Bang Theory

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When Katee Sackhoff guest-starred a couple weeks ago on The Big Bang Theory, the CBS show enjoyed its highest ratings of all-time.

With that in mind, the pressure is on Danica McKellar.

The former Wonder Years star - who played Kevin’s longtime girlfriend, Winnie Cooper - has actually grown into a best-selling author of math books. Therefore, is there a better sitcom on which for her to guest star than this one?

She'll appear on the January 11 episode.

Danica McKellar

“I play Abby, a grad student at Cal Tech," McKellar said. "She's the love interest for one of the characters.”

The actress has appeared on a pair of How I Met Your Mother episodes over the last few years. In the interest of full disclosure, I was madly in love with her when I was 13.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.

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TBBT Quotes

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.

It's very simple. Scissors cuts paper, paper covers rock, rock crushes lizard, lizard poisons Spock, Spock smashes scissors, scissors decapitates lizard, lizard eats paper, paper disproves Spock, Spock vaporizes rock, and, as it always has, rock crushes scissors

Sheldon