Hmmm, maybe I mean plasma TV's. I'll have to ask my friend what he's got. We were at his house checking out his 100+ YO steam system and I noticed when I walked in front of his big flat screen there was certainly a fair amount of heat radiating off of it. I also noticed this a while back when waliking in front of the large multiple TV display at the local electronics store, where I originally came up with the idea.
Some of these ultra insulated places actually expect the heat coming off the inhabitants to keep the place warm. The joke is you heat with a candle and cool with an ice cube. That's how insulated we're talking. Not bad if you want to live in what is essentially a walk in cooler. A recording studio I recently did a loss on had 24" thick walls with an air gap between the inner and outer structure. Like a house within a house. My heat loss/gain program showed, for A/C anyways, that the only heat load was the occupants. Problem? Couldn't find anything small enough to do the job.