I love multiple monitors. I made everyone at work start using multiple monitors last year. At first they were afraid...they were petrified...but now they don't like working at home if they only have one monitor. If you're looking to justify multiple monitors...
I recently happened upon this intriguing little API that provides a nice interface for displaying events on a timeline. It was pretty easy to get my head around it and it's pretty easy to setup and use. It's got a Google Maps-like scrolling interface...
Yahoo! has released an API that allow you to easily embed a media play that will automatically attach itself to MP3 links. They had one that just linked to their own music library, but that's boring. Here is a sample HTML page that has some MP3 links...