We understand why Super Bowl commercials are such a big deal/big business for advertisers, especially in this age of TIVO, DVR and Netflix; what we do get is when did Super Bowl commercials become their own freakishly well-oiled medium? Last year, a Snickers commercial featuring Betty White shot her back into stardom and made her the feel-good story of the year. Now this year, we get previews (some teasers, some full spots) of the commercials, and some websites are even live-blogging the ads on Sunday! Ad aficionados can check out the teasers here, and (spoiler alert!) see the schedule for their airings here. If that doesn't satiate you, you can also see a gallery of the "greatest" Super Bowl commercials here.