Hey there, I just stumbled upon something not too long ago on one of the tech blogs I follow (for the life of me I cannot remember which one) but if you are a Mozilla Firefox user and a Gmail user, you may think this is pretty cool.
Basically, a company called Globex Designs Inc. has created a Firefox extension that allows you to make Gmail look MUCH nicer. The extension is called Google Redesigned and I love it, especially for the way it makes the Calendar look. It has separate setups for Gmail, GCal and GReader and you can turn them on and off as you wish.
If you think your Google apps are a little ugly, give Google Redesigned a shot.