Here is a very funny language guide that I couldn't resist sharing: http://www.youtube.com/watch?v=XGctUr4biF8&feature=relmfu
Funny and some good points!( a few sterotypes though ,, lol, but all tongue in cheek)
Cute video. On the subject, I enjoy Henning Wehn's (German Ambassador of Comedy) stand up act but this series of videos he did for the BBC are both hilarious and genuinely educational:
http://www.bbc.co.uk/languages/german/comedy/