Found some great youtube video's which could help spice up your workout. I've done them all and love the shoulder one, and the abs/lower back gives some great variations that I've never seen before, so enjoy guys.

http://www.youtube.com/watch?v=Q-u8Re0bFz4

http://www.youtube.com/watch?v=HMdSor8_UI0

http://www.youtube.com/watch?v=R34yAmgv-Mw

http://www.youtube.com/watch?v=ZYJ1XVNi46Q