Easy way to speed up video playback without high pitch

So you want speed up boring college lecture/documentary/movie?

Needed and tested:
vlc 0.9.9a (on Linux)

Go to tools -> preferences -> (show settings ->all) ->filters -> enable Scale tempo

(next you'll be changing speed with right button where it says 1.00x)

Have hard time understanding movie in foreign language? lower speed.
Boring content or slow speaker? faster speed.