http://www.nicovideo.jp/watch/sm13706341
Typical happy-looking MAD.
http://www.nicovideo.jp/watch/sm13693062
Parody of the first video. It's all Kyuubey, including Kyuubey's face on Mami *shudders* and Madoka, Sayaka and Kyoko's heads on Kyuubey's body. *shudders even more*