Here is a link to the SiteDocuments web part: http://msdn.microsoft.com/en-us/library/ms544079%28v=office.12%29.aspx
Here is a picture of it on MySites: http://i.stack.imgur.com/TVQqM.png
I want to create a web part that is similar to this, but shows tasks instead of documents. My current idea is to crawl the whole web application and look at all lists to determine whether a list has the 'task' content type and has items assigned to the current user. There must be a better way to do this. Any ideas? I want to model my web part on the SiteDocuments web part.