Fireworks for your 4th. For best quality, click thru the videos here and watch them in best quality on their YouTube pages. Most viewers will only see the fairly awful flash video versions when watching through this widget.
Gotcha! This widget actually contains various test renderings, using the fireworks footage. To see these in all their glory, though, you will need to go to YouTube and be sure you select the "high quality version" for viewing (where that version is available. Descriptions and end credit placards give, in most cases, the details on the rendering method and file formats sent to YouTube for processing and relay to others.