When there was that lovely long pause after Ianto said "I should go" (whilst quite clearly not wanting to), I was waiting for Jack to either kiss him or come out with one of his lines.

Sigh.

incidentally, it was only re-watching it yesterday that it finally struck me why whenever the team have been in something together throughout this season, Jack always sends Ianto away from him.

Thought it was an interesting touch how, although Jack's flashback was (presumably) in either the seconds before he died/before he came back, and Tosh's and Owen's were when they had every reason to believe they were about to be crushed/guillotined, Ianto's came AFTER he had half-freed himself and seemed to be triggered by hearing Jack's voice.