Thanks for uploading those - he's so gorgeous.
I recognize the one from OotP - they are taken from the scene when Umbridge asks him questions in his Potions class. (Just before Ron gets whacked on the head.) When I watch that scene, I'm always under the impression that Severus had had a very bad night, probably been out for the night with Death-Eaters doing only God knows what. Unless he had been punished by Voldemort quite harshly. Anyway, he wants to strangle Umbridge (yes, Severus, do us that favor ! Get Hogwarts rid of her !)