There are many DVD?s on the market these days ranging from Restorative to Power yoga, all of them offering a different message and focus. Rodney Yee has several that I know are good. Eoin Finn from Vancouver BC has two power yoga DVD?s on the market that I believe you can get online both of which are fun and invigorating.
Also if you are looking for a short sequence of postures that incorporate stretching and strengthen you could look into the well-known sequence called Surya Namaskra or Sun Salutations. This particular flow sequence accesses your whole body and can be repeated several time to make a short or long workout.
Anna