Our friends over at Sports Illustrated’s blog Extra Mustard posted this video from my hometown of the Opera Singing Hot Dog Vendor. He is an either love ‘em or hate ‘em staple at all Detroit Tigers games. Charley Marcuse has been a hot dog vendor since 1999 and has now created his own mustard. Charley’s Ballpark Mustard and can be found a local Detroit-area stores. For a store near you click here!