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WATCH: 2013 Super Bowl commercials

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Super Bowl

With the big game coming up Sunday, several companies have posted ad previews or the entire ad online ahead of the most anticipated sports day of the year.

Watch: 2013 Taco Bell Super Bowl commercial

Watch: Mercedes-Benz 2013 Super Bowl commercial

Watch: 2014 Kia Sorento Super Bowl commercial

Click here to check out the full gallery on CBS Sports.com

Which commercial is your favorite? Leave a comment below and tell us what you like most about the ad.