I just did a quick count, about 250, counting box sets as one.
And between 2 and 3 times as many dvds judging by the shelf space, I didn't bother to count them.
Plus 2 moving boxes with Laserdiscs which I haven't touched since the player broke :/
I've only bought 1 3D blu-ray, then I checked out a few 3D tvs in different stores and walked away with a headache and/or general disappointment in the picture quality every time, so I figured screw that. I'll wait for 4K instead.
I use the ps3 as a player, Yamaha RX-V3800 amp, B&W FPM5 x 5, B&W PV1 sub, Panasonic PT-AE1000U 1080p projector with 92" screen. Picture and sound quality are amazing.