Nintendo designer Shigeru Miyamoto reckons he could make Halo games if he wanted to, but instead he prefers to look for things that gamers aren't expecting.
"I could make Halo," he told Entertainment Weekly (it sounds a bit arrogant, but remember that he's speaking through a translator, so it's probably meant in a more general sense than it sounds). "It's not that I couldn't design that game. It's just that I choose not to."
"One thing about my game design is that I never try to look for what people want and then try to make that game design. I always try to create new experiences that are fun to play."
Asked whether there are any real-world issues he'd consider making the basis of a game, Miyamoto identifies, er, children who don't give up their seats to the elderly on trains and people who don't pay taxes. "I look at places in the world where people understand that paying taxes to the government helps society. In Japan there's not that understanding." (The transcript doesn't say whether he was pounding his fists as he spoke.)
Miyamoto also went on to talk about The Legend of Zelda: Twilight Princess's relative lack of success in Japan, and what his son's likely to get up to when he finishes school. So if you're into any of that, read the rest.