Just read an article mentioning some more movies - not 100% finance, though:
Company Men
http://www.youtube.com/watch?v=xa5qg7cB1ZQ
Supercapitalist
http://www.youtube.com/watch?v=vxIHbAg23q0
Assault on Wall Street
http://www.youtube.com/watch?v=8Y-NqShTj5w