Ever since I saw this video on The Tube I thought it would make a great EEVBlog logo - the full lettered one.
Also supporting the lab equipment background - kinda says what it's all about from first sight - the way I personally got hooked at Mr. Carlson's Lab channel the second I saw it

On the TV background - yes quite versatile, but just feels as the TV itself looks a bit.. well, not so great. Back-lit projector screen could do wonders in this aspect, but would indeed require more space behind for a projector, even a short throw one. On the bright side, it can easily turn the whole back wall into a massive screen and even if stuff in front of it, still useful, can be used to project on parts of the background only, etc.
Happy New Year!