I need one that is corner-shaped to place in a corner of a room.
We already have one very similar to the entertainment console-looking one. No worries about it over-heating or getting too hot, as the one we have (and I'm thinking the ones listed here on woot, minus the canned gel one) is electric, so we plug in the wall. The "heat" is only blown out from the small metal vents located on the front face of the faux fireplace unit. Even the metal portion of the vents do not get "hot" to the touch, just warm, even warm enough for our children, aged 9 & 11 to touch to warm their hands. We've had our unit for a little more than a year, and it looks & feels very safe. The fireplace does not emit real fire, rather it's an electronic light fixture that imitates a real fire. But, unless you know this concept, it looks very similar to a "decorative gas appliance" fireplace (which my parents have in their home & which really does get scalding hot to the touch)... So by mere sight, they look the same.
The only criticism we have about ours is that we have our PS3 unit up there and when we are charging our PS3 remote controls, we have to make sure the cords don't dangle in front of those heat vents, otherwise, if the heat vents are turned on, the heat blows right on to the wires, and while for short time period (a couple hours) might not do any immediate damage, I'm thinking that eventually over long periods of time being exposed to the warm heat might warp the wires. So, we make sure to not dangle the wires in front of the vents.
Also, ours came with a small remote control for our unit which allows you to remotely set the faux fireplace light on or off, and the heat on low, medium, or high (but for us, it was useless as we had to hide it for fear our children would mess it up or lose it altogether... so we just press the buttons manually).
In case anyone was wondering how warm these units can warm up a room, let's just say you shouldn't buy them with the primary goal of warming up anything that is not within 6 feet from it (& I'm being generous with this distance), because the vents are small. So, if you have a very small enclosed room, say 100 square feet, then these types of units will "somewhat" warm up the room. OTHERWISE, the main purpose of these units is to have a piece of furniture that can hold your entertainment consoles (tv, video game units, TiVo, receivers, books, etc...) AND to have a piece of furniture that "looks like" a fireplace unit. When it is turned on, it looks great, and we've gotten many compliments on it, BUT when it's off (such as during the summer when it gets to 120 degrees out here in Las Vegas), then it isn't very noticeable, nor remarkable. But, we love ours nevertheless!