When I can't sleep, or if I'm sick, or otherwise need to kill some "quiet time" I watch an episode or two of the BBC Earth series "Life." Filmed in high definition, played back on Blu-ray, it's non-stop astonishment.
The discs include a short "making of" documentary of each episode, which is even more astonishing than the content. The months, sometimes years (!) spent setting up particular shots or scenes, the incredible danger and inhospitable environments, the luck both bad- and good- endured by the crews.
David Attenborough narrates. Unlike many documentaries, he is perfectly understandable (on headphones) without subtitles (though they are available).
The music is varied and tasteful and contributes. Sound design -- added bubbles or rustling noises or animal cries -- are appropriate and nicely dubbed in stereo. Even subtle humor sometimes is snuck in: the segment on Venus Flytraps has tiny burps dubbed in as the flowers reopen after a kill.
Extensive use of time lapse photography and slow motion photography illuminate trends and action impossible to discern in normal time.
Pacing is fast, almost too fast sometimes, with interesting shots and story lines rushing by as fast as you can absorb them.
And of course the visuals -- ah, to die for.
It doesn't get any better than this.