Glad terry brought Blackberry Smoke into this, i have loads of favourites from this genre besides all of the obvious ones, some of the more newer bands would be Preacher Stone & Hogjaw just to name a couple but something i`ve been playing a lot of lately is Jeffrey Steele, probably better know for his songwriting abilities & as one of the Hitmen Of Music Row, he runs the gamut from pop to rock to county but one thing remains the same this guy has an awesome voice

Check these out

Sweet Salvation Of Southern Rock n Roll
http://youtu.be/IaAS6RonjmA

Help Somebody (Acoustic)
http://www.youtube.com/watch?v=s_ZvxpSUvJI&feature=related

Gone (Acoustic)
http://www.youtube.com/watch?v=SItIudz_Ukc&feature=relmfu

Swamp Thing ( average quality live performance)
http://www.youtube.com/watch?v=bdK1Nvu8FZk