Conan O’Brien was back and well Monday night, showing his head injury video from Friday night’s Tonight Show that sent him to the hospital.

Conan O’Brien made headlines last week when he suffered a concussion filming a comedy skit with Teri Hatcher. Poking a little fun at the fact that Teri had recently completed the 2009 Nautica Malibu Triathlon (see pictures of her competing here), Conan and Teri ran their own mini-triathlon. During the final leg, which ended on The Late Show’s main stage, Conan slipped and fell crossing the finish line, hitting his head on the concrete surface. He would try to continue filming the show, but eventually had to be taken to the hospital. Here he is with Andy Richter talking about the incident and revealing video footage for the first time:

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