In case you use JKDefrag and did not know it has a GUI option. Very nice. http://www.emro.nl/freeware/
I think many know of it, and even the JkDefrag website lists it.
Much prefer JKDefragStarter
Much prefer JKDefragStarter
I much prefer just using this "JkDefrag.exe -q" or the command line version of JkDefrag.