Everyone remember Mario & Sonic at the Olympics? Yeah... me neither. I have purged all non-Elder Scrolls information/memories/thoughts from my head. It's important.
Sega is making another one of these things -- Mario & Sonic at the London 2012 Olympic Games -- and it looks decent enough. I've never been one for sports games, but it's pretty colorful and creative, which definitely spices up the blandness of sports.
It's out now, so it might be something you want to get the chilluns 'round Christmas time.