I loved it!
That was an amazing, creative flash. I love flash music videos, and yours is one of the best on newgrounds. You've obviously spent a lot of time and had a lot of fun making it, making it a fun experience for everyone.
The secret things you threw in were awesome, but I got frustrated when the screen refreshed to a hidden link (myspace, anyone?). Make the code open a new window so people like me don't have to go through it all over again to find the hidden items!
Oh, and the cow was hard to find, even though if you thought about it you would get it. Aside from that, you did an awesome job with the placement.
Thanks for the great entertainment!