Summer is not too far away, and you probably want to get bikini or swim suit ready if you aren't already there. The key to torching fat, is challenging your body in a short period of time. Intervals are perfect for this since your body performs efficiently under Steady State. Suprisingly, you don't want your body to be efficient when doing "Cardio," because that means you're burning LESS calories for the exercise you are performing.
This workout below was taken from Muscle & Strength and is wonderful. I remember being sweating puddles when I was done. The website recommends this 3 days a week, between splits. The workout combines both Cardio and Weights, for a full-body burn.
Remember to always challenge yourself when you're working out. If you want to see results, you have to push yourself to the limit (without injuring yourself).