Silverstone Temjin TJ11 case
Quad SLI GTX Titan
64 GB Corsair Dominator memory
Asus Rampage IV Extreme motherboard
Full liquid cooling
LGA 2011 Intel Core i7 Extreme 3960x
Plus various ludicrously expensive eSATA SSDs and DVD drives, I don't even want to do the addition to figure out how much that costs, especially when you start adding professional-grade 4k monitors and peripherals and everything.
Of course, this is just consumer stuff. It's too late for me to start thinking about servers.