If it gets too gritty (rare), overdramatised (common), or ridiculous (fairly common), for me, I just change channels. Remotes are gooood.
To tell the truth, though, the Nat Geo docu-tainments aren't as bad as a lot of the shows purporting to deal with air crashes that seem to screen. Some of 'em are actually quite informative! I do get sick to death of the endless repeated footage and camera-being-shaken special effects, though.
I think the worst situation for me was a film called "Blackout Effect". Total drivel.But overall, I think as a profession that we handle these made-in-America-for-the-masses shows reasonably well.
(No disrespect intended to those who've witnessed real nasty stuff.)