Also since its very relevant, Christopher Hitchens on Free Speech in 3 parts, about 20 minutes in total, excellent stuff. Filmed in 2006 here in Canada and he also talks about Canada's free speech issues today.
Part 1:
http://www.youtube.com/watch?v=X3Hg-Y7MugU
Part 2:
http://www.youtube.com/watch?v=Xq1e4cfvUKE
Part 3:
http://www.youtube.com/watch?v=y3OTS5gSO0E