I think one of the brands that uses interactive in a really wise way lately is Comcast. The awareness they've gotten since their 2005 fantastic Comcastic (not online anymore?) and other pieces like Tripleslanguage has made the brand being known even in places where Comcast services are not available, so i'm always kind of expectant what they will be releasing next.
These days, and again done by Goodby Silverstein and Partners, working together with Nexus Productions and Unit9, there is a new campaign called Dream Big. Presenting a fantastic website using a look-alike of isometric view Sims-style games, you can join the so-called Comcast Town, choose a neighborhood and then build your own space, using the capabilities of the Triple Play feature (tv, phone, internet) and inserting the product in a really smart way inside the experience.
Also i liked very much the way in which user interacts with others in the website and also through social networks like Facebook making a good use of Facebook Connect to get users logged onto the site, and doing it in a way that really makes it not so disruptive as i once wrote.
I won't extend very much, just visit the site and discover it because it's worth a good time spent on it. I found that there's also some TV commercials: