Pictobrowser
I just discovered Pictobrowser, a tool that allows you to easily include slideshows of your Flickr images right on your web site — as demonstrated below.
All of these photos are from our recent trip to Turks & Caicos. You can get the HTML code for your own Flickr photos by clicking the "info" button in the lower right corner of my slideshow. You can also just grab a URL for the slideshow (like this).