NBC's web plans for Chuck, Office, Heroes, 30 Rock
You may remember The Office did a series of webisodes in 2006 called The Accountants, where several of the co-stars investigated missing account money. It even won a Daytime Emmy for Outstanding Broadband. This July's webisodes are essentially a renewal of that series.
The network is also expanding 30 Rock's online presence with 30 Rock 360, which includes a blog and business courses from Jack Donaghy (Alec Baldwin). While that is probably worthy of a bookmark, I wish they'd also do something with Kenneth the Page. He'd make great webisodes-- just showing us around the real 30 Rock, even.
NBC is also launching an online-only show called Fears, Secrets & Desires where the public can a story that will be produced into videos starring "Hollywood talent normally associated with the big or small screen", according to Silverman.