Best media player

What is the best and free media player that can support all formats (a windows media-quicktime-realone format compatible)?

I like VLC media player. Easy to select video, audio, and subtitle tracks. Also supports mkv. But you will still need to get the codecs for wathever you are playing.

EDIT: Oh it doesn't support Real. My bad( i dont do that much real, so i wouldn't know). MPlayer seems to support most video formats.
Look here: http://en.wikipedia.org/wiki/Comparison_of_media_players

I personally prefer MPlayer when I'm on Linux or Media Player Classic (comes with Real Alternative and Quicktime Alternative) when I'm on Windows.

Thnx! I'll try both

For video stuff I use Media Player Classic. When it comes to Audio I use Winamp, but that's for multiple reasons that have nothing to do with it's functionality.

For video, i use VLC player, it basically plays any format. For audio, i prefer to use WMW, simple and already installed in your window. :D

When I used Windows, I did VLC for video and Foobar2k for audio. I used to be a Winamp person, but Foobar could play everything and was a much smoother experience. But definitely VLC for video... MPlayer has always been funny for me on Windows and OSX.