At first glance, I thought this "Epic Tea Time with Alan Rickman" was funny. And then it was just mesmerizing.
The cinematographer and artist David Michalek created "Portraits in Dramatic Time" - where 10-15 seconds of film were slowed to 8 minutes. Watching, then, we see the incredible range of Rickman. He manages to show such versatility of expression in a mere ten seconds. There is a sped-up version here, but this is the original (via pourbrew):