An extremely fast and easy to use plugin which allows one to embed videos into WordPress blogs. Both Flash and HTML5 modes are supported.
The KVS Player plugin (developed by CyberSEO.net) allows one to easily embed videos (supported formats: FLV, F4V and MP4) into WordPress posts and pages using the following shortcode:
[flv:url image width height link player]
The plugin uses the freeware KVS Player by Kernel Team.