Jared Schwager has an interesting idea on compressing CSS on-the-fly using PHP. Works pretty well. The end result is slightly quicker downloads and slightly quicker render times with a slightly higher burden on the server.
Fadtastic has a nice roundup of web site designs with big, bold backgrounds. This is certainly a trend lately, and I think it will continue since the only real strike against it is download times and the web doesn't seem to be getting any slower.
There is a great video up on Google Video of Doug Bowman talking about the Beauty of CSS. It isn't exactly new (2006), but it's a great watch. It's about an hour long and covers things we all should know. I have three great post ideas all set for this week from this video alone.
I have installed this plugin, which automatically reformats this site for the iPhone/iPod Touch when being viewed with one of those devices. I think it works spectacularly.