Ok, I really don't know what to call this particular practice, but please bear with me while I explain it.
For my birthday this year a friend of mine got me the Band of Brothers on Blu Ray, which I soldiered through (pun oh so incredibly intended) pretty sharpish. Near the end of my viewing of the series, Medal of Honour 2010 was on sale on Steam for next to nothing, so I bought it on a whim. In playing the campaign I felt far more immersed in the plot for having watched most of BoB beforehand (mainly because of the interaction between soldiers as the wars were fairly different), and at times I even felt an emotional attachment to characters in MoH because they mirrored characters from BoB in some respects.
So, with that in mind, when Deus Ex: Human Revolution was just about to come out I made the tactical decision to watch Ghost in the Shell and Blade Runner beforehand, timed so that they'd end at midnight so I could go and play DXHR immediately. Once the game got going, it was incredible; the films had set me up almost perfectly for it and it just made a lot more sense than I think it would've done otherwise. I mean, for example, in DXHR there's a lot of anti-aug sentiment amongst a few characters, but if I hadn't watched those films, would I have understood their reasons for that quite as well as I did? I doubt it, so the end result was I already felt like I was in the game world, and so the immersion was much stronger. Also the setting of DXHR clearly drew a lot of inspiration from the two films (Sarif's office really felt like it was lifted from Blade Runner, as did AJ's apartment when compared to Deckard's) so I guess it helped me to imagine what the rest of the world might look like, so it essentially just reinforced the immersion. I'm sure I've made that point by now, though.
So, has anyone else tried that or something like it? And what would you even call it? I might watch The Thing and Alien before I start Dead Space 2.