Gabe Newell originally thought the DS was "kinda stupid", believed PSP would crush it

Coming from Gabe Newell...

"Personally, I thought the DS was kinda stupid. I thought Sony was going to crush Nintendo in that generation of handheld devices. I was totally wrong. I hadn’t worked on it. I hadn’t tried to design any games for it. And clearly the DS ended up the winner. On the flipside, the first time I played Wii Sports, I was like, ‘Oh, my god — there’s so much potential here.’ But it turned out that Wii Sports pretty much nailed it, and that was it. And there was less innovation that I expected.”

from GoNintendo