Ever discover good sound right under your nose?

I'm sure it's happenned to plenty of people, but I'd like to hear about listeners that have come across substantial improvements to their systems unintentionally.

Personally, the lease to my loft-style apartment ran up last week and I temporarily moved back into my parents' home until I find out what city I'll be attending school in. Immediately after I set up my system in my old room I noticed a HUGE leap in performance. No fiddling with toe in, placement, etc - I'm talking about an enormous and sudden improvement here. The funny thing is that for the last month or so I've been considering a speaker upgrade and then all of a sudden everything, and I mean everything, improved with a room change. Now I'm thinking about just adding a sub and calling it a day.

Anyone else have a similar story they'd like to share? Anyone find Audio Nirvana by swapping out that megabuck pre/amp combo with the Realistic receiver that's been gathering dust in the garage for the last twenty years?