If you're really interested in tae kwon do, then go ahead, watch a class. If you like it, join.

If you're interested in something besides tae kwon do, check out these places

http://www.emeraldcityaikido.com/
http://www.kokikaiseattle.com/
http://aikidows.com/index.html
http://www.seattleschoolofaikido.org/home.aspx
http://www.twocranesaikido.com/html/index.html