The hot new Italian restaurant in Hilton Head is Trattoria Divina, which I believe is near the rotary.... www.trattoriadivina.com/ .   There is a Carrabbas on the island as well.

The greasy country and western place John is refering to is One Hot Mama's and is actually rated higher than Reilly's, Bonefish Grill and the HarbourTown Grill.  While I didn't think it was as good as TBones in Myrtle Beach, it's probably about as close as you're going to come to it on HH.