I'll post a full and proper bugreport, if necessary, but this problem is so amazingly glaring that I can't imagine that will even be necessary.
On AMD (x86/64) platforms... which is all I have access to at the moment... playback of WMV3/VC-1 files is totally hosed in the 8.2.2 release. I get just rapidly flashing, highly pixelated, and mostly green garbage on the screen. I've tried playing several different WMV files and the result is the same for all of them.
I can't image that I'm the only person to have noticed this, or to be able to easily reproduce it.
Could someone please confirm?