The moment still brings a chill to my spine. I'm not sensationalising..it really did. Back in season 2 when Ben (the then 'Henry Gale') told Locke "I was coming for you, John", it planted the seeds for what was to become a brand new protagonist battle.
We didn't know it then, but Ben was struggling to hold onto his "chosen one" status and Locke was Jacob's/the islands new bit on the side..only he had always been heir to the throne.
So, with that (and there's alot more shannigans that I missed out), can we derive Ben's messing with Locke's mind down in the hatch - you know,
"I never pressed the button *chortle, chortle 
*" and all that jazz - in a new light?
Seeing as Ben was probably telling the truth..he probbaly WAS there for John..perhaps scouting him to see what all the fuss was about. No doubt Ben was thrilled when he discovered that Jacob's new skirt was actually a plate-smashing, easily wound-up man of scie..no wait..faith? Science. Faith. Hunter.