Cardio doesn't have to be mindless. It is what you make of it, and I actually enjoy my time quite often.
Vary the exercises. Vary the intensity. Imagery works well. Music or audio books can help. Tabata.
It sometimes amuses me the constant putdown of aerobic type work. Like somehow the only manly workout has to be weight oriented. Depending on your current condition, you may only want/need cardio 2x per week. Surely you can find something you enjoy.
I read somewhere (not sure if it was here...) that drinking cold water instead of room temp can burn up to 100 calories a day. Something about how your body has to raise the temp of the water since its in your body, and calories=energy, therefore it burns calories.
Anyone ever hear of anything like this? Truth? Myth?
Buy a punching bag, a 110 pound bag will give you a good workout after about 20 minutes or so, beats the hell out of running. As far as riding a bike to work, no way in hell, I could make a 10 mile ride no problem, but I live 50 miles from the office and around here you'd have to worry about getting your ass run over. As far as being at the office, take the stairs, if you park in a parking garage, park on the top level and walk down to the enterance. Then in the evening time walk back up to the top level, decent workout, and it's a graded slope so you'll get a little more burn than if it was a standard walk.