Yes The PS3 CAN Play MKV Files (Without A Converter)

I already know a lot of people out there already know this but then again there are a lot of people who do not. 

YES THE PS3 CAN PLAY MKV FILES WITHOUT CONVERTING THE FILES TO ANOTHER FORMAT!

To be honest, I was never a huge fan of the MKV format since it was not as popular as a AVI or a MPEG file formats.  However the MKV file has a huge advantage over all other formats that I really like...  the video files are a lot smaller compared to others.

Here is a how to video on how you can make MKV files show up as playable media for your PS3.