E3 2011: Mario and Sonic at the Olympic Games in London 2012

The competition has already begun. Sega has made available the new

• Nintendo at E3 2011: Coming to a 3DS near you soon... (07/06/2011)
• Nintendo E3 2011 keynote, live from the Nokia Theater (07/06/2011)
• Video: Sonic Generations Rolls Up 20-Year Hedgehog History (02/06/2011)
• Project Cafe rumor - More rumblings of Super Mario Project Cafe (02/06/2011)
• These are the Big Action Games of E3 2011, We Think [E3 2011 Preview] (02/06/2011)

History of E3 (wikipedia)  Mario (wikipedia)