The folks over at Vox put together a very nice video that talks about vestigal structures and developmental processes that our own bodies undergo, which shows how we bear similarities to other species that we share a common ancestor with. While most people have heard of how we all have a tail at one point in utero, things like wiggling your ears were new to me. Give it a watch.
A Great Video on Evolution You Can See on Your Own Body
A Great Video on Evolution You Can See on Your Own Body