I laughed three times during this trailer. The patient being beaten in the face with his own heart, the distended eyeballs, and the demented writhing at 43 seconds. If you have a friend or family member with an iPad, buy them Surgeon Simulator.
Heck, if you have an iPad, buy it, too. And stick your iPad in everyone's face to make them play it; inadvertently with their nose, at first, then with their fingers when they calm down.
The iPad version adds dentistry and bulging eyeball surgery. You can also try to perform a surgery on a moving gurney. And there is multiplayer, somehow. Thank you. These new features may make it into the original PC game, but for now they're exclusive to the new, $6 iPad edition.