Why is it, that many science fiction episodes resort to the ‘obligatory’ time loop episode? The episode where day after day, one of the main characters realizes that their day just keeps repeating. It usually takes them a time or two before they accept that it is not Deja Vu, at which point they begin to try to make others understand what is going on – often to the point of frustration. Of course, eventually they figure out how to break the cycle, often with a lot of hassle involved.
For me, the use of a time loop as a plot device ranks up there with flashback and musical episodes. Frequently, time loop episodes are used for comedic effect. However, all too often they are executed poorly and advance the plot very little, if at all. I understand that other people like them, but they are just not my cup of tea.