Meryl Davis, Charlie White, Drew Carey, Amy Purdy and others will compete
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Her Partner: Valentin Chmerkovskiy
Her Odds: 7 to 1
Why? Although plenty of Gen X fans will have fond memories of "The Wonder Years," McKellar has been largely off the radar doing real-life smart person stuff with the exception of small roles on "The Big Bang Theory" and "How I Met Your Mother."