Well done.
I've got a unique plan, too: Lost my license in 2005 and been biking 15 miles to work (each way) every day since then. I'd rather not say how much I've lost in the past 3 years, because it sounds like a lot but disgusts me that it's not enough (I still haven't learned to put the fork down)
But those of you who are interested, they sell little mini pedal things that you could keep under a standard computer desk. (like the Verseo Freedom or Instride Cycle XL)
I read an article a while back on someone who would just do his email etc. on a treadmill, using a laptop. He'd keep it at 1-2MPH and would end up burning a few hundred calories by lunchtime. He kept it so slow because he didn't want to disrupt his typing etc.
The funny thing was, he'd be LESS tired at lunchtime than he was when he'd just sit in a chair all morning. Better bloodflow or something.