The Shred is what got me started - before thinking about nutrition or anything. What's great about it is the workout, from the level of the interval to the whole concept - 30 mins a day for 30 days - is entirely manageable - small goals are built into it, so that's motivating. It's just so convenient - you can easily fit it into your day. Hooks you into working out & feeling good. You start wanting to eat better.
I absolutely did see results - 9 lbs of loss, and everything tightened up.
Will just say that my knees took a hit - I did a bit of research on form and that helped.
Goal - 135 lbs
April 2011 - 145 lbs
August 2010 - 178 lbs
C25k, DVDs, swimming