Pageflakes is a personalized home page along the lines of Google Personalized Home, Netvibes, and so on. It's nice and AJAXy and has a pretty good selection of widgets ("flakes"), including address book, sticky notes, to-do lists, Gmail, headlines, and so on. One nice feature not seen everywhere else is the ability to create multiple pages, which take the form of tabs at the top of the page and let you have multiple sets of widgets organized for, say, Work and Play. It also has a third-party API for creating your own widgets and just now they're sponsoring a widget contest the grand prize for which is an Xbox 360.