Woah , great episode.
I think it was the first time we saw Haruhi showing her caring side as well as proving that she DOES have common sense (I feared she would get excited about this incident...puh). She is not just a UFO\espers\whatever-obsessed weirdo after all... That's good.
And "otskaresama~ , Kyon" at the end was really unexpected and ... cute
And what was with Itsuki staring at Kyon's birthmark?