My National Geographic mtDNA analysis became available to me today. I (or rather my maternal lineage) comes most likely from Western Europe. I belong to Haplogroup H. This group is mostly found in Western Europe but it does exist in lesser percentages in Asia.
Here is the Wikipedia entry for Haplogroup H. Once my paternal (Y Chromosom) results are returned, I will update this document. To keep this document short, I am moving the discussion into the Forum. To submit your own DNA sample, check out the Genographic project.