The Headmasters Office, spoil

Minor spoilers for this one.

Several portraits of Hogwarts headmasters.

EDIT:

Okay, so I'm listening to the Mugglecast from Mugglenet, and the editorialists are speculating EXACTLY what my picture depicts. That Severus and Albus sit side-by-side on the walls of the headmaster's office, arguing for all eternity.

Dumbledore: "Sherbet-lemon, Severus?"
Snape: *groan*

JKR said in a recent interview that at the end of book 7, Snape does not have a portrait in the Headmaster's office because Snape was forced to abandon his post. However, she went on to add that Harry would be the one to make sure Snape gets his rightful place on the wall of Hogwarts.

Hogwarts accepted Snape as a headmaster, letting him get into the office, whereas Umbridge did not. SNAPE IS AWESOME!