In a Nutshell
Nutshell is little (read: 70k download) app that is an add-on to IE 5.5+ that is a special search box that can search google.com, amazon.com, dictionary.com, IMDB, and daypop. This is cool.
I have a custom built start page at home which has links to all of the above, except for daypop. But using this app intergrated with the browser is nice. Props to the inventor.