Hmm, I can think of 2 things..
First, when we are shutting down the lights to head to bed, if I'm the last one through the living room, I NEVER remember to hit the light switch- no idea why. So once we get all cozy and shut off our night-stand lamp, we realize the light is still on and he gets up and shuts it off.
Second, I am terrible about putting away laundry. I'll wash it and hang it up all day long, but for the stuff in the dryer, it makes it to a basket and takes its time making it to the folding and drawers... We have to get underwear and socks out of a basket more often than not!