Oh my -- tough question! There aren't many that I DON'T love. I have different favorites in different categories of workout, but I must say that my personal favorites are mostly older tapes with a few exceptions.
In the killer cardio area, my all-time fave definitely is IMAX2. I really love interval work (well, actually,I have a love-hate relationship with interval work.
)
Not being a hi-lo fan at all, I don't have a hi-lo favorite -- I pretty much dread all those segments.
I am not a circuit workout fan, either, but I'm growing fonder every day of the new HSTA video -- the first circuit workout I've liked, honestly. I do them, but they feel like eating my spinach!
For pure stepping fun I go back over and over to Rhythmic Step and to Step & Intervals from CTX.
For kickboxing I prefer Cardio Kicks over KP&C (but that one's close. ;-))
For strength training I love the PS Series.
For endurance training I love-hate ME and Power Hour almost equally.
If I could only own one Cathe, I'd own the CTX series, which I still think after all these years is her masterpiece. Time and again I go back to it for a rotation and I find it just as thorough and fun (and love that music!) every time!
http://www.click-smilies.de/sammlung0903/sport/sport-smiley-003.gif Kathy S.
http://www.click-smilies.de/sammlung0903/spezial/spudniks/spudniklifter.gif