Watch the Mama Told Me online guitar lesson by Corey Congilio from Rhythm Factory: Texas Blues
Perhaps my favorite all time offering from the Vaughan Brothers is sadly, the only one. The Family Style record is fantastic. It's super funky probably because Nile Rogers of Chic fame produced it. The track Baboom/Mama Said is loaded with some killer funky ideas that can be translated to a blues form. This example can go a long way. You'll dig it for sure!