2x07 The Marchioness
6x05 The One with Joey's Porsche [4th or so watch]
1x01 Alien Invasion
Usually-comedic (and gory) magicians Barry and Stuart get their own series on Watch "from the makers of Derren Brown", in which they string together a selection of magic tricks posing as supernatural events in order to convince a community that something paranormal is happening. Here, it's a small British town that they try to make believe is being observed by aliens. Some of the tricks are quite familiar if you watch enough magic -- they're still impressive in their own right, just increasingly seen -- while others feel fresher. All are suitably baffling. I'm not sure how well the "convince a whole town" element works, though. But maybe.
[Watch it (again) on Watch's website.]
Person of Interest
[Watch it (again) on Demand 5.]