There are several companies that are offering this testing, and a variety of levels of the tests apparently. The three big ones that I have seen so far are:
Ancestry.com - Ancestry offers a test for $99 for members and non-members alike
|FamilyTree University offers|
another great article on DNA and
23andMe - This site offers not only ancestral testing, but apparently a health related test
I haven't done any of the tests from any of these sites, and I will freely admit that I am still looking at incredible marriage of modern technology and genealogy! The implications of what DNA testing and sampling could do for modern genealogy is absolutely staggering. I do, however, have to admit that I am somewhat skeptical of the full usefulness of the testing primarily out of concern for the scientific reliability of the results and the size of the DNA database that results are being compared to.
I'm curious to hear what experience others have had with DNA testing and genealogy. Please share your thoughts and experiences.