A friend of mine has a system that is far superior to my HT. He's got a wicked Krell Pre/Pro and multi-channel amp...couldn't tell you the model numbers.
His speakers are DIY, Joe D'Appolito's own Thor and Odin speakes based on some high-end Seas drivers, actually very similar and comparable to Tyler Acoustic's excellent Linbrook models (to give you an idea). Sound quality wise, you'd find these beside a lot of $4000 - $8000 speakers. You can buy the kits at Madisound, but most people who spend this money on DIY speakers just buy the drivers, then select crossover parts and cabinets to higher specs than stores like Madisound can justify selling.

He's got a 100 something inch projector/screen setup, the works. I hate him.
I just can't fit enough time into my schedule to justify going this far...I'd have to take away from some of my other hobbies.

Nice though.