The first video is a countdown that Jason Bertrand produced. He counts down his top 5 weapons from Gears of War 2.
http://gamevideos.1up.com/video/id/22690
Feel free to add your thoughts on his choices.
The second is a cool animation that one of our users did. What would happen if Marcus Fenix became a rock star?
http://gamevideos.1up.com/video/id/22736
Enjoy!