If you have U-verse you can get this xbox thing that basically turns it into a u-verse receiver/dvr (using the xbox hard drive). Sadly they charge $99 for this, versus a monthly fee of like $5 for another unit. I guess it would pay for itself eventually. Or if you somehow had a TV with only one input it could be worth it. They advertise not having to use the source select button on your tv remote as a feature. Its not a $99 feature.
Also you can stream a lot of ESPN content via Xbox Live... not their top ticket items, but it is a good way to see some of the less in demand sporting events... e.g., CONCACAF soccer, NCAA women's basketball, etc. You can usually see one of their current sportscenter shows as well..