Street Sign Generator allows you to create fun personalized street signs. It's great for making things to post on your Facebook or MySpace.
The downside of this site is that there are not that many street sign styles to choose from (currently only four) but they are fun - there are, for example, a desert scene and a scene on Mars. Just type in your text, add a suffix if you wish (from .com to Street) and click "Generate Street Sign." This site links to other fun sites, such as a Warning Label Generator and a Tombstone Generator.