London here (even though from title I thought this US only but I don't want to be left out)
Stock of all three to be found. 360 / Wii still dominant position in many Game / HMV etc stores but PS3 space increasingly rapidly in line with recent sales success of the console and in some stores its being given more room than 360 (retail space allocation is a very good way of seeing where the retailers are expecting sales to come from). A lot of Wii space grew massively but has been shrinking as the realisation of shovelware vs big sellers ratio has started to become apparent.
BR getting strong push with prominant big title movies next to PS3 section and on display as you enter DVD section.
PC sections slowly shrinking a little to accomodate the other three and looking a little 'shabbier' compared to the console sections.
Lot's of GTA IV for both 360/PS3 at enterance (pre-order posters, etc) so from what I see in London (UK) neither console is going to get a big marketing advantage in terms of in-store displays or priorization of one console over the other.
Oh, and bought UT3 for PS3 on a whim (actually liking it probably because I skipped UT2003/2004 so it looks like big jump since UT) and Patapon for PSP (great title, but my kids have nabbed it so I'm going to have to pry it back to get a go myself!)
Try to be reasonable... its easier than you think...
