For Conan O'Brien, who has become close with former The Walking Dead star Steven Yeun, tonight's Conan appearance by Yeun's onscreen wife Lauren Cohan was an opportunity to look back at the history of the show, as well as forward to what Cohan would like to see for Maggie in the end. That particular answer -- plus or minus a few minor details -- is something she's given before...and so is the tale of Yeun and fellow star Michael Cudlitz's "death dinner" -- the celebratory sendoff each actor gets on The Walking Dead when their character shuffles loose the mortal coil and they're allowed to leave Atlanta.