These two time-travelling doctors are perfect as rap-battling opponents. The video features Nice Peter doing a recognisable impression (with a good British accent) of the tenth Doctor Who, David Tennant, but he's outdone by EpicLLOYD's brilliant cameo as Marty McFly. The Doctor Who sections are composed excellently, from the video's introduction, through to the Doctor's regeneration as Tom Baker's version of the character. Best Line: Doc Brown - "Time to face your permanent fate, now Dalek my balls, EXTERMINATE"