There are some things that provoke an 'oh shit' reaction in a high percentage of people, intangible or not, and one of them is a shotgun to the face. For a second before he remembers his newfound advantage, Sylar falters, eyes widening at Dean and Jo and the freezing sensation that is Sparrow.

Then he does remember it, and he smirks with all the insufferable smugness of a man who knows (or thinks) he's invulnerable.

Mockingly casual: "She should have kept a closer eye on it."