Here is a shot of my S2 with the Ideal Lume. I started out with a Lowes Cabinet Light (18") before I dropped a lot of money on the Ideal Lume a few years ago. As someone that always watched in the dark, I wanted to experiment with an el cheapo version before spending $70. The cabinet light and 18" 6500k bulb cost me about $18, and I loved it so much, I eventually bought the IL from Gregg Loewen.
Biggest pain on the cheap version was it was bulky, and it did not have an adjustable shield like the IL, which helps limit light. This pic is close, but realize the set is off, and there is some light reflection on the ceiling. Of course the screen is not affected, which is the point. I recently tried watching with a 40w lamp bulb, which I use for 100% of normal tv viewing, but it's too light for movies. I also do not prefer complete dark vs the backlight. Blacks tend to look a little deeper with the 40w, but Im willing to sacrifice that for a darker room.