The latest trailer for DreamWorks Animation's Mr. Peabody and Sherman pokes a little fun at the hit BBC series Doctor Who by pointing out some distinct similarities between the world's smartest dog and the Time Lord. Ty Burrell and Max Charles voice the title characters, who must use their time traveling device The Wabac Machine to bring classmate Penny Peterson (Ariel Winter) back from ancient Egypt. Director Rob Minkoff's animated adaptation hits theaters March 7, 2014.