Because I’ve been helping out with the music videos and with the pilot episode, I´ve come back to my bad habit of watching movies staring at every little technical detail.
That´s why I´ve become a bit obsessed with the “long take” (and also because of one movie that I watched last night: Atonement).

A “long take” (plano secuencia in Spanish and séquence in French) is the one that is filmed without any cut between the shots so that the camera films all the action. The difficulty of these shots is extreme and requires a lot of training and previous tests. Evidently, the more action or people involved then more merit it has.
There are lots of examples for these shots so I will just show you the most stunning ones that I´ve seen.

There are some fake “long takes” in which, for instance, the camera gets closer to something black colored and there they take advantage to make a cut and link it to some other scene.
We can see a clear example for this in a chapter of The X files titled Triangle which was fully recorded in this way (see minute 1:43)
In this other video, in the minute 4:07 there is one of them because there is some blood that disappears softly during the minute 4:20, in my opinion, in the 07 they cut and add the blood after digitally.

Also, the last curious info that I´ve read out there. There is a film fully filmed in one long take (and without editing) and its length is nothing more and nothing less than 96 minutes, heh. Its title: Russian Ark (I´m fascinated with “long takes” but not enough to swallow such an experiment). I leave you this information over here in case any of you feel like watching it so let me know.