You all just need to shove it. My network, 802.11g, dones't mess with my phone, which is 2.4ghz. They work together wonderfully. Then I have another phone, guess what? its 2.4ghz. And I have another one, its 4.8ghz, so there's no competition right there. My Logitech mouse? Works with my Logitech controller just fine.
Oh and one more thing, MS said they tested the 360 with common household items to check for interference,and then picked a different range that none of them used. Yes, I know it fucked up Walmart, but are those common household items? umm no.
Plus, if it interferes with your wireless network, then just go with 802.11n. I could use it if i wanted, but then my Mac wouldn't support it.