With domain names becoming somewhat scarce, one easy .com buy is: Buy your office telephone number.
Attorney Bill Harrell has already done this, and it's a no brainer. The firm website is www.forjustice.com, and their number is 251-1111.com. Surely it is simply redirected to the main site.
A good friend who advertises in various media adds the tagline, "our website's the same as our number ...."