Thanks for sharing your plugin -- works perfectly on 3.5.1 and tested on a couple themes, including Catalyst.
It's easy for people like jzkits to come in here and blast away at plugin authors who dedicate their time to improving WordPress ... and maybe make a little money, too. He's Canadian -- I can tell by the way he types, and it's rare that a Canadian is so rude.
Great job, too ... somehow hardcoding wmode=opaque or wmode=transparent, so it doesn't cover up a drop-down top navigational bar, like other YouTube plugins do. Great work!