"That guy could read from a phone book and make it interesting," you've never said about anyone. But if you did, you've probably said it about Alan Rickman, or as we all know him, Snape.
Well, actions speak louder than words, and watching him drink tea in the finest Shakespearean style beats any number of "I'll get you, Potter" + death stares.
Bear with it. It starts slow, but once you get to 1:22, the teabag hits the fan.