i second a visit to
www.videofitness.com
also you may want to visit
www.collagevideo.com
some of my current favorites include:
Turbo Jam - Cardio Party 2, Cardio Party 3 and Kick, Punch Jam
some Leslie's - 4 Really Big Miles and 5 Mile Advanced = both workouts are adaptable in that you can stop after 1, 2, 3, or 4 miles
Michelle Dozois - Your Best Body Circuit (cardio & weights)