As of recently I've run through DNA-test. You can do it too if not already in various labs around the world that provide such service. It's easy (fill-in online inqury, send DNA samples, get back results) and cheap ($100-200 depending on what test exactly you'd order). Seems like a waste of money? True, but you may comfort yourself with the thought that you've helped science, somewhat.

I'm R1a1a7 sub-clade, which is a bit surprising given my ethnic background. The question is what's your Y-DNA haplogroup?

Archaeological note
Men who belong to haplogroup R1a are all ancestors of a single man who lived about 15 000 years ago. Probable spread through several waves from the steppe north of the Black Sea to the west in Europe and south-east in India 3-5 thousand years ago. These events are likely connected to the spread of Indo-European languages and Kurgan culture.

R1a1a around the world
Most common among following ethnicities: Sorbs, Poles, Russians (50-65%), West Bengal Brahmins, Khatris, Konkanastha Brahmins (50-75%), Khojant Tajiks, Ishkashimis, Kyrgyzs, Altai people (50-70%).

Sadly (for the purpose of this topic), I doubt many people have undergone such a test.

Jesus, you people are boring.

Actually there're quite many of them, though they visit specific forums dedicated to archaeogenetics or smth like that. I'm complete layman in the field, but thought it was kinda interesting. Nevertheless you can guess your haplogroup, say, if you're white Western European, there're high chances you belong to R1b.