Blink and Continuum

The episode "Blink", from the 3rd Season of the new Doctor Who is not only the best episode of that program yet (achieving it's greatness largely from how it defies the series standard conventions), but it is also a perfect example of the kind of intentional looping you can do in the Continuum RPG, provided you ensure that the Junior character experiences it before the Senior.

They even do it the right way in the episode - the character who experiences it first (and documents the details) gives her notes to the (Junior version of) Doctor, who('s Senior self) then goes back and causes it in the first place. He dutifully strives to carry out the exact tasks she charged them with so as to prevent twisting the time line. In Continuum terms, he's fulfilling his Yet to prevent Frag. A GM could have a lot of fun emulating this set-up.

"Blink" is an incredible resource to the Continuum GM who's trying to explain the game to new players.