This is a video recently released by Pixar highlighting some of the Easter eggs that show just how connected the movies in the Pixar universe are. Some are fairly obvious, but a lot of them I didn't even notice while watching the films. I guess that's why they call them Easter eggs -- they're hard to find. I remember growing up I never found a single Easter egg during the Easter egg hunt, but I did get bit by a fox sticking my hand in a hole. "But we never had Easter egg hunts when you were a child." Yeah, thanks for telling me now, MOM.
Keep going for the video, it's a Facebook video though so if it doesn't work write Zuckerberg and tell him Large Marge sent you. UPDATE: Also found and added a Youtube version.
Thanks to Stephanie B, who agrees Easter eggs are some of the best kind of eggs besides golden and Fabergé.