This is pretty straight-forward: a supercut of film characters saying "blah blah blah," or some variation thereof. At first you might think that sounds boring, but it's actually rather hypnotic and almost musical. No matter what, though, it's definitely an excuse to put off your actual work. Isn't that reason enough to watch?
I'd nominate Jason Statham for sexiest "blah blah blah," and Charlize Theron in Monster for most unexpectedly hilarious "blah blah blah." (Thank god we have the internet, otherwise how would I have figured out such important things?)