Not dvd, but I could never get rid of Keli Robert's Ultimate Step, my original Firms (Vol. 1-4), Kathy Smith's Weightloss Workout, many of my Charlene's. Cathe's Power Hour and Rhythmic Step.
On dvd,
Sin6 because of Slim & Limber
some of the Slim Series (Tone, Mix, Shape, Cool)
Cathe's Pure Strength, Slow & Heavy, CTX.
Margaret Richard's workouts...all of them
Kelly Coffey-Meyer's strength workouts...unfortunately her cardio is way too energetic for me.
Sara Ivanhoe's Yoga for Dummies and Candlelight Yoga.
There are others...some of Kathy Smith's new compilations.
Some of my Leslie's.
Squeeze Stronger and Pure Barre...I'm falling in love with barre workouts
A few Jari's: her original Ripped, Ripped & Chiseled, Slim & Lean.
I may hang on to Michelle's Your Best Body trio...and a couple TLT's.
There are others I'm sure, but can't recall...