CrossOver Games 8.0.0 Linux
Ubuntu Studio 8.04 64-bit
I downloaded the kit from Opera's download archive. I browsed for a while flawlessly, and then discovered that this old version of Opera includes a Flash player plug-in, so I didn't need to install it myself. YouTube clips work just fine, but you will see a small note that you can upgrade to Flash 10 (10 being the latest, at the moment of writing this). Password manager also works just fine. Unfortunately making the YouTube clip full-screen produces a black window (that can be closed, it doesn't crash).
All in all, gold medal compatibility.