I use the original Boxee Box (not Boxee TV). I've had it since they came out some 5 or 6 years ago. It connects to
your network (wired or wireless). It has streamed everything I've thrown at it, including hi-definition content.
Although I do only use it on a wired connection, your experience with wi-fi may differ. Did I mention it has played
every file I've thrown at it? (I've got 900+ movies and 10,000+ audio files in various formats on my PC)
The box itself has an HDMI connector for your TV (along with analog connectors) and a USB port
for a flash drive or portable HD.
You can surf the internet with the built in browser or choose an app for various services and streaming
sites (e.g. Netflix, Hulu, YouTube, MLB.com, et al). The remote is RF and has a full qwerty keyboard.
Sadly, D-Link no longer makes them but they can still be found for sale under $200.00. (NOS)
I've got a new "smart" TV that includes a built-in media server but doesn't compare to my box.