Looks like there was an error in Cheyenne -- here's the quick recap from the studio guys. Excuse any spelling errors and shorthand

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1024 is the trivia answer.
The winner is Edward White of Oskego (sp?) Minnesota.
3D will probably start in 4th quarter (presumably this year) Start with some dedicated channels. Quite a bit of new technology of 3D (new chipsets, new technology). Will get more excited about 3D with the next generation of technology of set-top boxes and TV sets about a year from now.
Still might need 3D glasses.
Technical explainer about using every other frame of video.
Will improve that with new chipsets next year.
Don't know if it'll cost extra. Probably some basic stuff and some premium.