Ha, I've thought of that too Jos. Sending off samples to many different services and having a laugh at the differences. But they're quite expensive.
My sister has done a detailed family tree going back to the seventeenth century for our paternal line, but I would be interested to know my mother's genetic history (Irish)
However, I don't think I'd want to know what diseases I'm in line for! If it became generally required, it wouldn't half bump up insurance premiums.
I think I read somewhere that these genetic testing doodahs are not accurate at all and not sophisticated enough to be able to determine inherited disease.