My wife and I were talking recently about a trope that we've both started noticing more and more.
I see it a lot in recent sci-fi and fantasy literature- within the first couple of chapters a sub-plot will be introduced, usually presented as innocuous or mere character development. The main plot will carry along until at some point, there's a revelation that the two plots are actually two facets of the same situation. Successful conclusion of the conflict / problem / mystery doesn't happen until the main character's integration of these initially separate plots.
I recently started recognizing the same thing in television shows. This morning I was catching up on the syfy channel's Eureka, and I realized that this whole show is built on this trope. Something from the first ten minutes will end up being the solution to the problem du jour.
Am I just noticing it more, or is it really more prevalent?
eta: And yes, I know it's the "chekhov's gun" trope-
http://tvtropes.org/pmwiki/pmwiki.php/Main/ptitlexn9xzsjd5fif