No, I haven't forgotten.
I actually held off on posting Go-En IV which has been mostly finished for a long time now, because the actual Undoukai event was so long ago, and because the video is mostly rubbish. I guess holding off on it is what made the event so long ago in the first place...
Oh, and it's really boring. But I hate eating up my hard drive with unused crap, so I'll post it anyway. The event's actual blog was posted about a month ago, can be found here, and the rant about asshat Billy Blanks, here.
The video is a big sloppy bag of arse, but you're welcome anyway.