Songs of Oldelaf and Mr D is a chanson band with a great sens of humor. The music is good but really less interesting if you cannot understand the lyrics. Their best songs are Raoul Le Pitbull about a dog eating a whole family, and Nathalie, a parody of cheesy love song between two catholic teenagers.
But the best one is definitely Le Café. There is no official movie clip but two students of the Art School of Angouleme (EMCA) made one which is really amazing; a great cartoon by itself. On Youtube and Dailymotion, the video has been watched more than 1,500,000 times!