Have you ever wanted to pre-fill a form with a link? There is handy little jQuery addin that will do the trick for you with minimal effort: http://spff.codeplex.com/
The SharePoint Form Field Assistant (SPFF) can be added to any new or edit form in SharePoint 2007. With SPFF loaded, you can manipulate form fields through query string parameters.
For example, you just add a query string item for the name of your field and what you want the value to be: ...NewForm.aspx?Title=NewListItem&Name=Joe Jones