You can watch full tv episodes, try Crackle or tv.com, both available in The market.
If you have a subscription, HBOgo works well, and I believe that there is a browser available (paid app) that mimics your desktop browser and allows Hulu to play.
There is also the apps that stream your desktop to your phone, I haven't tried them for multimedia so I'm not sure how good they are.
Lastly there are the expensive options, switch to dish network, they have an app that allows you to watch your home tv, or get Slingbox, it has the same.