The look of pure excitement and surprise. It's always fun on Christmas. Even if it is half hidden by your brother's big noggin.
A fashion show, midway through gift opening, for no reason whatsoever other than he loves Indiana Jones.
Contemplation of attack moves on Spiderman. Love it.
The boy with the "it's not broken, but it sure feels like it, STILL, a week after not breaking it" finger.
And no holiday is complete without caped super hero socks.