The Radeon 7500 All-In-Wonder has both TV in and out. It comes with a remote control, too. There are later versions of the All-In-Wonder, but the Open Source drivers aren't nearly as far along.
The 7500 drivers are completely open source. The project developing TV in/out is here: http://gatos.sourceforge.net/
I can't comment on the stability of the TV support ('cause I haven't tried mine yet). It works great for standard X11 stuff.