Les Misérables - 10th anniversary concert:

https://www.youtube.com/watch?v=ZG-gojr493E

Les Misérables - 25th anniversary concert: (avec Nick Jonas - Marius)

 Part 1:  https://vimeo.com/212310644

Part 2:  http://vimeo.com/66710344

And a parody from Sesame Street:  https://www.youtube.com/watch?v=GyYZfSmwH3c

 Great articles about the history behind Les Mis:

http://www.thedailybeast.com/articles/2012/12/24/the-french-revolution-for-dummies-and-les-mis-rables-watchers.html