Notorious open-source applications don't reach the 1.0 milestone every day. Today happens to be one of those occasions: VLC media player 1.0.0 is now available for Windows, Mac OS X, and Linux. Just head over to videolan.org and grab either the 17MB Windows installer or the right package for your operating system.
For the unacquainted, VLC has a downright preposterous number of features, including decoding support for practically any video format, video capture, streaming, transcoding capabilities, and browser plug-ins for Internet Explorer and Firefox. This app will let you play back anything from DVDs and H.264 trailers to Windows Media, RealPlayer, and DivX videos, all without requiring third-party codecs or filters.
According to the announcement on the official news page, version 1.0.0 brings "many new features," new formats, new codecs, and a "very high" number of bug fixes. You can check out a list of supported formats and codecs on this page—note the tabs on the left.