I was watching this video today and it has some great things in it.
It also has some things to watch out for. If you're young and fit and are stretchy then doing these exercises will be fine and fun. If you're over 35 or are new to yoga or have injuries, doing what this model suggests will quite possibly frustrate you and possibly injure you.
Sam Dworkis has a great article about how yoga teachers need to be careful when teaching people who haven't been doing yoga for a while. Check it out here.