High def LCD television. I'm too lazy to check the brand, but there's no input lag on videogames, so it's top stuff in my book.
No surround setup (or even a 2.1 setup, just the TV's speakers). I'd kind of like to get one some time, but honestly, I've never been impressed by surround ever. The only time I ever notice it is in maybe 5% of movies when they use it to go "Check it out, this helicopter is flying past your head!" or in The Grudge where they made it sound like the ghost was making noises behind you.
My DVD player is XBMC on my XBox (not a 360, that's why I called it an XBox and not a 360). It can do standard def MKV files, but I'm sure it would struggle and sputter if I tried going higher def