HTC put out an Evo 4G HDMI Docking station. The glossy black finished dock gives you the ability to watch movies from your Evo on your HDMI compatible TV. There is no way to put your Evo comfortably on the dock without remove all forms of protection, and extended batteries. Even so it will give you all the High Definition viewing you want for $39.99. Sounds good but not great, go for it.
EVO 4G HDMI dock finally shows up at Sprint stores, will come home with you for $40 -- Engadget