quelques videos

Une serie de videos tres interessantes :

http://www.youtube.com/watch?v=ZVDSC0a5APc

http://www.youtube.com/watch?v=lDEGt6bwMgw

http://www.youtube.com/watch?v=1vUn2rmKNsw

http://www.youtube.com/watch?v=FmZQLydsr-8

http://www.youtube.com/watch?v=fnFLTXlTnQ0

http://www.youtube.com/watch?v=Lyg8EcRt504

http://www.youtube.com/watch?v=j2LYNcFZEe0

http://www.youtube.com/watch?v=IXIuFKmhrMU

http://www.youtube.com/watch?v=WMu3cxHDYSs

http://www.youtube.com/watch?v=GdxLFtr-JiA

http://www.youtube.com/watch?v=d5MeWuOGV_M

http://www.youtube.com/watch?v=_Z5LhHppS5M

http://www.youtube.com/watch?v=587SfCBF6Es