What player do you use to watch movies through?

Kmp and Media Player Classic

DaumPot Player and The KM-Player for all x264 & avi content, and MPC-BE for x265.

VLC is only one I use

MPC-HC with reclock and madvr

Mostly KMPlayer ,ArcsoftTotalMediaTheater,AnyDVD,MPC and sometimes I use older players to bypass the cinavia protection of the the new Blu-Ray Disks ;)

GOM media player

I use VLC..
I've tried with others like windows media and DIVX but these can't play MKV files so I go with VLC.

VLC throws everything I have at it.

BSPlayer PRO... rulz! :D

I've been using Dziobas rar player since 2008/09. And lately DivX player, both players are very good.