Just yesterday, Bethesda released the Xbox Kinect update to allow gamers to use voice commands for their character. Bethesda has now announced that the first Skyrim downloadable content, called Dawnguard, will be released this summer, and that there will me more news about the content at E3. With just over a month left until E3 (June 5-7th) I guess we've got a bit to wait until we can hear the official news on what will be included in the content. Some rumors have suggested that crossbows will be added to the game with this upcoming downloadable content.
Shout Fus Ro Dah or any of the other shouts at your TV in either english or dragon language and have your player shout the corrisponding level of shout you said (Fus for level 1 of Unrelenting Force).
You can also use voice commands to control many of the other menu's and actions, like navigating the map by saying 'Winterhold' and having the map center on the location. I look forward to trying this out when I have a chance.
A full list of voice commands is available here.