A bunch of celebrities dressed like ZOMBIES to help the Red Cross spread the word about the importance of donating blood. They were done up by the makeup crew from 'The Walking Dead'.

They include Maria Menounos, the Black Keys, Jimmy Smits, director Peter Jackson and NASCAR stud Kurt Busch.

Check out the gallery here.

By the way, 'Walking Dead' fans will enjoy this preview of the first new episode of the new season!

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