Roger Ebert gives this video two thumbs up. Both thumbs have butter on them. Exactly how much popcorn can you eat in five minutes? We're talking Shannon Theatre popcorn.

Depending upon how curious you are, our video offers this year's Shirley's Gourmet Popcorn Co., third annual popcorn-eating contest. This is no doubt a first for YouTubers.

The event was during the Shirley's Nov. 5 customer appreciation day. So, sit back and enjoy the show. (It's better if you have some popcorn in your lap.)