Running dual-boot LinuxMint / Win8 + most programs off the SSD which works fine even with only 120GB.. Obviously boots very fast. OC'd 4.5Ghz stable quite easily without much heat, especially compared to stock CPU cooler. Don't care what people say about future-proofing, I did a bit with this build with the 16GBs RAM/750w PSU etc (mainly because of big sales at time of purchase). I can SLI my 660 down the road no big deal as they are quite efficient SLI cards, with good Linux support.
Not doing much gaming on it thus far, been busy with work and waiting for the newer games to come out like BF4; in transition between console and PC gaming at the moment. I do play plenty of Civ5 though.
Just bought a nice + cheap ($25) Asus soundcard with a built-in headphone amp, outlook; AMAZING. Pushes my midranged Sennheisers very nicely and the improved s/n was immediately noticeable, even at only 105db.
Edit: No longer running Linux on it, OC'ed to 4.6Ghz on air: 24hrs prime stable and has been running very smoothly for months.