As of yesterday I finally have my 6.1 setup just about the way I want it. I'll probably be tweaking endlessly, but the main parts -- buying speakers, placing them, mounting them, and hiding the speaker wire -- I've finally taken care of. Thanks to the advice of many people on these forums, I think I've made choices that are pretty reasonable. Here's a look at my rear center setup. I hooked 2 Atoms up because I thought the 1 Atom had too much localization. At the moment they're wired in series (I'll get a second amp later), but surprisingly this resulted no apparent drop in the SPL. Due to wall limitations, I can only space them a maximum of 2.5 feet apart. In this picture, they're shown a bit closer together, angled about 60 degrees out: The shelf was made from $20 worth of parts at the Home Depot. I used two decorative metal brackets and a 9.5"-deep shelf. The speakers are at a slightly-too-high 6' off the ground (3' above ear level), and about 4-5 feet behind the listening position. This provides a moderately diffuse sound. Here's a closer look at the hardware: The rear L/R speakers are at the same height as the rear centers, and about 4-5 feet to the sides of the listening position. Here's a look at the rear left surround: Notice that the bracket is a slightly different design than the rear center shelf. I had some extra brackets lying around from a previous project, and couldn't resist the opportunity to make the rear L/R shelves for a total of $0 in new material (brackets and scrap shelf wood). Only a keen eye will notice the bracket difference without the benefit of side-by-side photos though. Running the speaker wire through the ceiling/walls wasn't nearly as scary as I thought it would be -- but that !#@$@# fish tape was really annoying. Whatever trouble it was, it was absolutely worth it to get an attractive surround setup without wires dangling around in my HT. Thanks to everyone who gave me advice! One nitpick: even with Atoms all around, the transition from rear to front stage is not always smooth. Specifically, I had a chance to check out the "TXH Pan" last night -- where that cool sound starts out behind and slowly pans from rear to the front with the THX logo on the screen (know what I'm talking about?). Well, the transition from the rear to the front was rather too abrupt. I suppose this is because I'm lacking an additional side L/R channel. Ah well, maybe next year.