I use this machine for everything. Gaming, internet, homework, watching Blu Ray movies, video editing, Skype, etc. Everything is working well. I built this system a few months back. No problems have occurred at all.
This is a huge upgrade from my previous computer that had an Intel Q9550, 4 GB RAM, GeForce GTX 465. I built it to play DayZ, Crysis 3, Battlefield 3, etc. at better frames and higher settings. Having current technology is a plus, too. ;)
As much as I like Antec cases, I should have gone with the NZXT Source 210 Elite Black case instead. It had better cable management options and USB 3.0 for the same price.
The TV is a 39" Samsung UN39EH5003FXZA and the stereo is a Sony MHC-GX450. Couldn't ask for a better setup. :) All in all, this entire setup is worth over $2000. That's money well spent IMO.