When he leaves a room...he turns the light off.
When he is done watching tv...he turns it off.
When he goes outside or comes inside...he shuts the doors.
If you leave a light on...WATCH OUT!
(I'm upstairs in the hallway, with the light on, checking out my outfit in the full length mirror)
Lil D: Mom, did you turn this light on?
Me: Yes, I'm using it.
Lil D: Well, you need to turn it off.
Me: I will when I'm done. (then I don't, as usual)
Lil D: Mom...you didn't turn it off (as he turns it off for me:)
(he's over at his babysitters, their whole family is home. Their 18 year-old Trevor comes out of the family room...Lil D goes in to the family room then promptly comes back out)
Lil D: Trevor, were you in that room watching tv?
Lil D: Well, you need to turn the tv off when you are done so you don't waste power....
Awesome...that's all I can say...truly Awesome.