Well, my keyboard and mouse are both backlit, really good for late night gaming sessions with friends.
I figured out that all the power required for my pc was just over 500 watts, so I got a 600 watt just to be sure.... plus it's a really cool PSU that has a clear acrylic lid and glows blue (whigh then causes a glowing effect with my clear green wire sleeves)
It took over a year to build it, as I didn't have a job then... months of intense chores... 0_0