Flogging Molly have just released a DVD with a soundtrack to accompany it and they've done "Drunken Lullabies", "The Wanderlust", "Another Bag Of Bricks" and "Tomorrow comes a day too soon" acoustically.... they all sound awesome acoustically!
I also have a bootleg and rare recordings of Mike Ness doing acoustic versions of some classic Social Distortion tracks.... the acoustic version of "Makin beleive", also performed by the likes of Merle haggard and Emmylou harris, is phenomenal!