[Silvi]

Hi,
I have about 20 pounds to loose. I am in a relative good shape, 27, male. I think that I can follow any of these workouts. What do you recommend me to start with:
Turbo Jam Cardio Party, Slim in 6, Yoga Booty Ballet, Guillermo Gomez: Kickbox Underground., Leslie Sansone 4 Fast Miles.

[Stargal]

I think it really depends on what 'style' you like most and think you'll stick with. All of them are going to work as long as your doing it consistently. So it's probably best to choose the one that appeals most to your 'fun factor'.
I have the 1st 3 you listed and don't really like them lol, as I prefer more dance based w/o's. Ppl seem to really think Turbo Jam is fun.