Being an owner of Apple products certainly has its privileges, but it also has drawbacks--especially in the ports department. Apple's computers notably lack HDMI, which is an increasingly common and useful port in any desktop or laptop with good video playback. Though you won't be using your MacBook Pro as a DVD player for your TV, there's a good chance you might like to play Hulu or YouTube or your collection of iTunes music and video on the larger screen, and directly connecting your laptop is the easiest and highest-quality way to achieve that end.
Griffin's Video Display Converter, released at the beginning of the year, is a one-dongle solution for anyone who wants to output video via HDMI. The contents are simple: a Mini DisplayPort-to-HDMI converting cable (about 5 inches long), and an additional HDMI-to-DVI attachment that can be daisychained for DisplayPort-to-DVI connections (this extends the dongle to about 6.75 inches).
If you're a user of MacBook Pros from the 2008 or 2009 model years, you'll use the Video Display Converter to carry video to your TV, but will still have to plug in an audio cable via the MacBook's audio-out jack, which can either be 3.5mm or optical. The good news, though, is that the 2010 MacBook Pros actually output digital audio via Mini DisplayPort as well. Griffin's cable can be used for both audio and video for new MacBook Pro users, finally making the process a one-cable affair.
