I used this same LED product to do the lights on my corner pantry. I also bought similar lights from Radio Shack that are brighter, BUT, they aren't constructed nearly as well and are just slid into a bulky rubber sheath. Also, the Radio Shack lights were something like $30 for 6 ft, compared to $6 for 16 ft. The Amazon lights are a MUCH better deal, and easier to work with. You can't just cut the Radio Shack lights without completely ruining the water proofing.
Gnihcraes, did you drill holes in the aluminum track to run the zip ties through? Great idea by the way.
In picture #5, you have two zip ties close together at the end of the strip. I might consider tying the wire into a loose knot between those zip ties, so on the off chance that the light is ever dropped or falls, you're not pulling your connections apart. Basically the same thing they do with computer speakers. Great looking project.
EDIT: My idea for these strips, which I'll never do in the place I live currently, is emergency lighting for the house. One of those 2" strips in each living space in the house would be great emergency lighting for power outages. I think even a small 12v battery like
this would probably give you light at night for several days. You could use a portable drill battery as well I bet.