Fitness Videos - Low-Impact vid with fast results?

Would anyone have any recommendations? (Sp) :D
Thanks & have a great day!

These are all about 45-55 minutes long, but the Fitprime series is all low impact and results are almost immediate.
There are 6 in the set and can go from begiiner to advanced, just modify to suit, the instructors tend to go beginner/intermediate for the routines.
Sorry, I can't pick just 1, they are all great!
http://www.whfn.com/metaboost.php
http://www.whfn.com/flexposture.php
http://www.whfn.com/pump.php
http://www.whfn.com/lean.php
http://www.whfn.com/upperbody.php
http://www.whfn.com/lowerbody.php

Leslie Sansone's Walk Aerobics and Gilad's Beginner's Aerobic DVD would be great to use. They are low impact but run between 30-60 minutes.

Cyl53

also another hard to find set that is great is the Firm Basics. One is Fat Burning, Sculpting with Weights and Abs/Buns/Thighs. They all are about 45 minutes very lo impact, but as usual easy to mod and go way up on the weighted segments, concentrate on form, and can be intensified.

edited for spelling no thanks to a messed up keyboard