I wish they'd stop pushing 802.11a. It's ancient technology.
I recommend users to buy "Pre-N" devices. Way faster than g/a, way better range, and less interference.
Oh and Scoble, don't take HDTV advice from those guys. A 720p native set like my Samsung DLP is the lowest you'd want to get.
But nowadays there are 1080p DLPs shipping with much better black levels and of course a much higher resolution (with continued support for 720p and 1080i, etc).
If I were looking today, I'd be looking at an HL-R5078w like this one:
They can be had for $2500ish if you look around.