wow great posts bblazer I kept gearing about Tabata but never really knew what it was....looks just like something I could use. My favorite cardio for puking is still circuit pt (otherwise known as Get some or hooah pt!)
Circuit:
Run 1/4 mile
25 pushups
25 situps
1 minute flutterkicks
Repeat till you get to 2 miles
As you increase your fitness level you can do more pushups....faster runs.....more situps....etc. And did I mention no rest allowed too??? If you have a pullup bar:
Amrap (as many reps as possible) pullups
amrap pushups in 1 minute
amrap situps it 1 minute
optional : 1/4 mile run 6:00 minute pace
Repeat till you get to 100 pullups (if it takes you a lot of sets you gonna be hurting!)