New Orleans’ Mardi Gras favorites Bag of Donuts got all dolled up just for us to rock the house at the Marshland Festival.  We think they did a pretty snappy job of it, but we’re biased.When they broke out “Play That Funky Music,” they brought down the house.  We thought we’d share it with you -- because it’s Monday and all.  They’ll be live at O.B.’s on Aug. 27 and live at Jennings’ Roastin’ With Rosie Barbeque Festival in mid-September, and they be filling us in on their plans for those shows.