Conan O'Brien was back at work Monday and he showed the footage from the accident where he sustained a concussion. Conan was in a foot race with Teri Hatcher when he slipped and fell backwards and hit his head. Someone made the floor way too slippery. Conan O'Brien explained that there were also things that happened shortly after the incident that he does not remember. Fortunately, he appears to be okay now. Take a look:
