|My 23 and Me genetic test kit.|
I wrote about my own experience with the genetics testing here. 23 and Me tests for many things, including Connexin 26-related hearing loss, along with other things like psoriasis, asthma, celiac disease, drug responses and even fun things like the consistency of your earwax. They add to your report as time passes and allow you to connect with possible relatives (if you want to).
The Ancestry is also interesting. Bear in mind your results in this area will be slightly limited if you're female. I think the test would be a really good present for a male member of your family (your father, brother, or paternal uncle) because your paternal line will be the same as them and you can learn from their results.