Well I wouldn't call it a "home theater" because it's just in our living room and must fit in with the other functions of the living room, but here's the basics:
pre-amp: Outlaw Audio model 975 (new - sounds good but HDMI passthrough sucks so I've had to wire stuff direct to TV and send a separate HDMI from the bluray to the preamp))
Amplifier: ATI 1505 (150 W x 5 channels) - more than enough power.
Speakers: NHT 2.5i towers (run on "large"), matching 3-way center, and some old Advent surrounds that the previous owner left installed on the wall (I am fairly well convinced now that the vast majority of soundtracks don't benefit from larger or more expensive surrounds, or 7.1, etc.)
Subwoofer: Velodyne HGS-12
For the video side, I have a new Samsung UHD 65 inch TV, and an Oppo bluray player (a few years old now).
It all sounds great - plays loud enough that my ears are ringing after a movie, but no one notices how loud it really is during it because it's not shrill or otherwise unpleasant - it just sounds good. I'll try to post some pics because our living room looks really nice now, especially with the custom wood blinds I installed last weekend. I really am turning into you people now...