Wordpress Flash Tag Cloud allows you to display your site's tags, categories or both using fancy Flash animation.
The options page allows you to change the Flash movie's dimensions, change the ribbon color as well set the background or make it transparent.
The movie will scale itself to fit inside whatever dimensions you decide to give it. If you make it really small there will be a lot of overlaping and it will be harder to click on them (250X350 is somehow optimal size).
The hex value for the background color you'd like to use. First select Use custom color to true and then update settings. Another field will appear where you can set background color in hexadecimal format.
Choose whether to show tags only, categories only, or both mixed together. Choosing 'both' can result in 'duplicate tags' if you have categories and tags with the same name. These words will appear twice, with one linking to the tag and the other to the category overview.