So you grab your standard milk, eggs, bread, maybe some cookies - -and head for the checkout at your Hy-Vee, only to come face-to-face with former Late Night TV show host David Letterman!

And he's going to bag your groceries for you!

According to CNN Entertainment, Letterman apparently was in Des Moines to see the Rahal Letterman Lanigan racing car No. 45, driven by Christian Lundgaard in the Hy-Vee Indy Car Race.

Dave reportedly stocked some shelves, ate some Hy-Vee goodies, and made a few loudspeaker announcements, to the surprise and delight of the Hy-Vee shoppers.

Sources: CNN Entertainment and Letterman YouTube

8 Celebrities You May to Run Into In South Dakota

You may not think of South Dakota as the crossroads of celebrity life. That's a good thing, we kind of like to live under the radar here on the upper plains.

But, living in South Dakota we are just a few degrees away from stardom. Not just because the author of the Little House on the Prairie books is from here. Or because every time Tom Brokaw shows up on TV, someone will say, "You know he's from Yankton."

We may not have as much of a chance at a celebrity sighting in South Dakota as we would in Minneapolis, but there are some famous personalities you may run into in the 605.