Gandalf spotted in portrait in Dumbledore's Office
April 12, 2003 at 1:01 PM ET
MuggleNet
The portraits in Dumbledore's study represent the past headmasters of Hogwarts. As Harry enters the study for the first time in Chamber of Secrets, we can see a portrait of our very own Gandalf the Grey included in the collection of paintings! (Chapter 19 on the DVD: It is just above the doorframe)
Thanks to Gavin and TheOneRing.net for the tip.