Video player - just about any format

Different file types have different functions, focusing on fidelity, picture quality, compression, et al., but who really wants to clog up precious hard drive space by downloading a million different media players?

From Clipart Blog ...

That's where VideoLAN's open-source VLC media player comes in. It may not the most feature-packed or intuitive player, and without the user-made WinAMP-esque skins, it's not much to look at, but one thing's for sure, this scrappy little media player can play just about any format that you can throw at it. The list of files that this thing can handle goes on forever, including, among others, 3gp[6], ASF, AVI, FLV, MKV, MOV (QuickTime), MP4, NUT, Ogg, OGM, Wav, MPEG-2 (ES,PS,TS,PVA,MP3), AIFF, Raw audio, Raw DV, FLAC, 3ivx, Cinepak, DivX, DV, H.263, H.264/MPEG-4 AVC, HuffYUV, Indeo 3[7], MJPEG, MPEG-1, MPEG-2, MPEG-4, RealVideo[8] , WMV, and Xvid files. It can also play your DVDs and VCDs. Not all of the different OS versions of the software support all of the aforementioned file support, but considering that VLC supports 15 different operating systems (Mac, Windows, Linux, et al.), that shouldn't come as too large a shock.

VLC 8.6, introduced last Sunday, fixes a few bugs, and adds Windows Media Video 9 and Flash Video compatibility, among other things.
Found thanks to appscout