Keeping teens tuned in may be as complex as keeping their hand out of your wallet, but companies think they’re beginning to figure it all out. On hand at the National Show are several demos of technologies and services aimed at keeping the "echo boomer" generation seated where we want them: in front of the television and computer; cable at their fingertips. Whether educational or entertainment based, information-enriched content is beginning to find a home alongside linear television. Here's a sampling:

Discovery's Cosmeo service is essentially homework help via an extensive library of age-appropriate documentaries, accessible via the Internet. For $9.95 per month or $99 per year, users can create a profile, input simple information such as age and skill level in school subjects, and then access a database of knowledge filtered by a custom curriculum. Think of it as tutoring via documentary—a perfect solution for summer months.

Turner has rolled out a gaming service called GameTap, a playground of old video game titles from Pac-Man to Sonic the Hedgehog to Crazy Taxi. Accessible via broadband, the gaming arena features 400 games, all licenses harvested from the recycle bins of arcade, console and PC game developers. I’m having a tough time seeing people shell out $10 a month to play essentially outdated titles, but Turner says subscriber numbers are consistent with projected numbers.

ESPN360, a VOD and exclusive content delivery service has grown in leaps and bounds since its re-launch earlier this year. Available as a virtual channel, ESPN360 streams VOD content via broadband, with an extensive library of exclusive broadcasts, as well as broadcasts, highlights and shows from the ESPN networks.