Smoking on the Boulevard is great BBQ but like said it's take away. If it doesn't have to be local and you don't mind a 30 minute drive or so take them to Big Bob Gibson's and you can show them all the trophies from the awards they have won. For locally I'd recommend **** Howell's Barbeque Pit at 1350 N. Pine St over near 7-Points. Another place that I hear many folks like is "Pops BBQ" 3477 Co Rd 61 off of Old Jackson Hwy in St. Florian.
Good luck.