As you presumably heard, a couple weeks ago Tonight Show host Conan O’Brien fell during a race with Teri Hatcher, hit his head and suffered a mild concussion. The fall was played during a subsequent broadcast, becoming the latest but by no means the biggest celebrity head-bump. Super Punch provides some context with their listicle of 8 Famous People Bumping Their Heads, our favorite of which is this way over-done video of President Barack Obama hitting his head on his way onto a helicopter.

(via Urlesque)