A Locking HDMI Cable!
 

Somewhat old news but not yet mentioned...

American Cinematographer Magazine:

American Cinematographer Magazine: June 2008 - New Products

Hey everyone,

The company that's selling the HDMI cables are from Syracuse NY. Since
my home is not far from there, and since I was home last weekend, I
figured I'd give them a call to see if if I could stop in to test the
cables out before I purchased one, and they were happy to oblige.

The cable works great! It held my HV20 up easily, and one of the guys
there with an HV20 was swinging it back and forth. Then we hooked a 15
inch monitor up to it and dangled it with that. One thing I have to
say though is that it really isn't that easy to pull it back out. You
have to awkwardly press really hard and push forward, but I guess
that's a testament to how well it locks in.

-Keith