Insert a Picasa Album in your post as a flash slide show.
Picasaweb is a plugin could post the photo in your picasaweb album into wordpress blog.
Picasa LightBox is a WordPress plugin that lets you easily add Picasa images to your WordPress posts and pages.
GoldenGate integrates WordPress with Picasa Web Albums.
Picasa Widget works as a widget, making very easy for you to embed in sidebars (if supports widgets) the latest albums from your Picasa account, or th
Browse, search and insert photos from any public Picasa Web Albums into your Wordpress pages and posts.