Doctor Who: Steven Moffat's Timey-Wimiest Episodes

At the top of the list is this finale to Steven Moffat’s first year as showrunner. The story begins with the Doctor called into adventure via an elaborate daisy-chain of information sent by River Song through time and space. It then reveals that an ancient legend is actually a trap, seeded into history by the Doctor's enemies to lure him to an eternal prison.

The Doctor goes on to escape the trap via a complex (and potentially nonsensical) series of time loops, in which the he jumps around time to deliver important information to himself and his allies that will ensure their survival.

The story also has an older Amy Pond talking to her younger self, and creates a scenario in which the Doctor must “reboot” the universe to save it. This leads the Doctor to move backwards through his own life, giving him the chance to plant information into the sleeping mind of Amelia Pond which will allow her later to remember him back into existence.

No other story in Steven Moffat’s career has made such extensive use of time-travel goofiness in its plot. It seems to pull out every trick Moffat's got to get the script where it needs to go, making this a strong contender for the “timey-wimiest” episode of Doctor Who of all time.