Yup, the test is extremely easy too. Just requires a simple swab on the inside of the cheek. I know there are a decent amount of donor drives that you can find through the website that will add you to their registry

Shameless Plug: The football coach at the college I went to actually has a charity dedicated to getting more people to take the test and I think is associated with the Be The Match organization. One of his players (who now happens to be an outfielder for the Chicago Cubs http://www.chicagotribune.com/sports/baseball/cubs/ct-matt-s... ) ended up being a match and ended up missing a good chunk of the baseball season even though he was expected to be drafted by a Major league team that year. Pretty cool story