CNN had an interesting piece on the strategies involved in these groundbreaking events and how perhaps they weren't so different in our two countries.
http://edition.cnn.com/video/#/video/world/2008/10/02/bittermann.french.vp.lesson.cnn
I admit I liked the format of the French debate, where the candidates sat on opposite sides of the table facing each other. It felt like more of a discussion than a public address, whereas in the US debates the candidates often address the public or the commentator and seem to have less interaction with each other.
If you missed them, both the Biden/Palen and Sarkozy/Royal debate videos are widely available on the internet. If you saw them, what do you think of the similarities or differences?