Many times designers are using flash elements in their blogs to make them more attractive. To obtain this result, all you need to do is to use a plugin, such as WP Flash Titles, which allows you to customize your headlines as you want. But for those with less knowledge, there is always a solution. And this solution is using themes already created by someone else, who have implemented flash elements . You can find these themes at the end of the article, even if they are few.
Flash Headlines in WordPress Blogs
Other using of flash in WordPress Blogs
Good examples of using flash headlines in other blogging platforms
WordPress Themes using flash elements
Wrapper Theme is the only one WordPress Theme which is 100% flash based.
Bella Theme is really nice and simple theme with some using of flash in headlines, header and sidebar.
Paper Trail Theme is a stylish two-column WordPress theme with fancy Flash headlines for posts and the weblog title.