There's a rather iconic picture floating around the internet of Malcolm Jamal-Warner, a still frame taken from the Cosby Show. It features him, as Theo Huxtable, in his hih school hallway in front of a locker, rubbing his chin with a reflective gaze on his face. It's a great picture, and here's a screencap of it taken from elsewhere on the internet:
I once had occasion and need to 'resource' this picture, and so I did... about a hundred times. I'm presenting them all here as tiny avatar-sized images. They are all links if you click on them - but some will take you to larger sized versions of the images in question, and some will just show you the same image, still thumbnail-sized.