As a guy who liked Mark Henry prior to 2011's heel run, it was certainly vindication to see him rule the scene for a good while. Injury in late 2011 leading into 2012 really hurt him though. He wasn't used NEARLY to the level he should have been except for the great match vs Punker on RAW following WrestleMania. If he returns come tomorrow then oh man.
I'm going off of memory so I could be wrong, but methinks the Danielson/Henrys were 11/4/11, 11/11/11 (HAH), 11/29/11 (Cage match), and a lumerjack in January 2012 where they're both heel. MIGHT be 1/20/12.