Well I liked it.  The problem with this kind of stuff (instrumental hard "fill in here") is it's easy to get boring since the riffs are so much fun to play over and over again.  You kept changing things enough and soon enough to keep me interested except kind of (and I mean only kind of) towards the end.  About the last minute or so.  You were obviously having fun.  Now if we can just get pigs to fly, all those "when pigs fly" things will come true.