1) Drink while cooking.
In the past, this meant a glass of wine. It just seemed so grown-up and elegant to sip at red wine while preparing a fabulous meal. Now, however, I try to remember to grab one of my many (refillable, sustainable) water bottles from the fridge and polish it off while I cook. I know that I've been satisfied with smaller portions lately, and this may have helped.
2) Surreptitious subway moves
While waiting for the subway, which I do at least twice a day, I saunter to the edge of the crowd and stand on my tiptoes. 60 times. My calves burn when I'm done! I contemplated doing wall pushups, but decided that would draw too much attention.
3) The Ipod is for more than just music.
Derrr. But I only figured this out recently. My gym routine now consists of a warmup on the stationary bike for about 52 minutes--the length of one episode of Big Love. I alternate 5 minutes at level 14 and 5 minutes at level 5, and by the time it's over, I've burned around 400 calories without getting bored. Then I head to the treadmill and the real workout begins! I tried watching TV episodes while running, but I need a beat.