If you're thinking about getting a website, you will want to have a good domain name. However, trying to find one that isn't taken can be a real pain. This is where Nominus comes into play. Type in some concepts and Nominus will check through available domains and try and come up with some good ones for you. It will do top level domains, country based domains, domain shorteners and generic top level domains.
Its nice and easy to use, and it's entirely free.