I use this weird "next generation remote control extender" to control a hidden AV receiver from another room. Tried it on a long shot after other IR extenders kept failing on me.
I am shocked to say that it works great! Every button press works, every time, from a large room away. Haven't even had to change the battery in about a year. I say shocked because of how it works - there is no IR receiver, it just somehow senses what the remote is sending through the battery compartment of the remote. Everything about that made me think "yeah, that'll never work". I was wrong.