Content providers are moving their content directly to the iPhone these days, bypassing iTunes and the other "middlemen". The latest but certainly not the last to do this sort of thing is CBS Interactive with their aptly named TV.com application. Right now the content is a little thin(selected full episodes from the CSI series, NCIS, Berverly Hills 90210, Star Trek: The Original Series, and MacGyver), but it isn't hard to see all of CBS's content ending up available on the iPhone.
The free app is availalbe in the App Store for both iPhone and iPod touch.
From the developer:
The TV.com application allows you to sea