Post inspirational vidioes form any where
these can be clips to :-

make you feel better/happy
confident
inspired
encouraged
other XD

ill start off with two :-
Where the Hell is Matt? (2008) - YouTube <-- think he is really good as he brings people together...

40 Inspirational Speeches in 2 Minutes - YouTube <-- got shown this when my year before we where doing are GCSE exams...

Oh this one always makes me smile
This kid is so great. Thumbs Up for Rock and Roll!

This! You've probably heard of it already, but that's kind of the point. It's not really a clip, but 30 minutes of WORTH IT.
:D
It inspired me and my friends to create a club at our school and participate in 'cover the night'. Watch the movie to see wgar I'm talking about.
Kony 2012 video