Celebrity Twitter Photos of the Week: Kim Kardashian and Hulk Hogan Show Off Their Guns

Grey's Anatomy's Ellen Pompeo (Meredith) and Patrick Dempsey (Derek) bond in this October 4 pic because they're friends, obviously, but also because they're activists! Ellen's shirt is part of "DNR (Do Not Resuscitate)," an edgy clothing line with t-shirts and dog-tag necklaces that promote awareness of organ donation. Love to see co-stars loving and sharing their love of a cause!