We've seen Conan O'Brien nail plenty of 'Conan' parodies with dead-on accuracy, but now he's just dead! To commemorate 'The Walking Dead''s season 4 return and the entire cast's presence on 'Conan,' watch the late night TBS host join the ranks of the living dead in a zombified cold open for last night's 'Conan'!

O'Brien gets the full Greg Nicotero treatment in the latest 'Conan' cold open, donning extensive walker makeup as he staggers his way toward the show. Who should he encounter along the way of course, but Andy Richter, before things take a surprising turn. Cue the theme music and haunting imagery of 'The Walking Dead' title sequence itself, 'Conan' style!

The installment itself boasted interviews with near of the entire 'Walking Dead' cast, including Andrew Lincoln, Norman Reedus, Danai Gurira, Lauren Cohan, Steven Yeun and Melissa McBride (we miss you, Carol!). Of course, we'd perhaps understand if others missed the show to check out Jay Leno's final night hosting 'The Tonight Show,' but barely.

Watch 'Conan' become 'The Walking Dead' in the cold open above, and tell us what you want to see from the show's Sunday return in the comments!

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