I use a few and since each has its strengths and weakness as well as well discussed on the internet I'll list what I use.
3. Apple TV.
I answered a similar question but forgot this one.
4. Kindle Fire HD 7.
Seems to be a lot more solutions out there today.
One of my tv's has no USB or Ethernet port. It only has HDMI, DVI and a 75 ohm coax connection. What hardware would it take to get this tv on my wireless network ?