For Blogger based blogs that use the Layouts feature to define their appearance, there is now a convenient Slideshow page element that can showcase pictures from Picasa Web Albums, Flickr, or any other site using MediaRSS.
The announcement on Blogger Buzz about this is illustrated with a couple of photos, but the blog itself does not use the feature - in fact it can't since it looks as if it is a Template based blog, rather than a Layouts based blog.
Template based blogs of course can still include slideshows via other mechanisms, such as Google gadgets which currently offers 102 results matching "slideshow".
Labels: blogger, flickr, picasaweb