Do you have some mundane task that you have to do regularly through a Web browser? Are you a developer who wants to automatically test the interface of your latest Web application? Maybe you want to log into all of the sites you visit on a daily basis with one click. If you fall into any of these categories, you should check out the iMacros Firefox extension.
Has it been a while since you used FTP from the command line? While there are decent GUI-based FTP clients (such as gFTP), you can automate operations with the command-line version and handle file transfers with no user interaction at all.