So you are a Java programmer and looking for the next big thing? Checkout the talk of Peter Kriens about the OSGi Experience: Modularizing Java. It's a great way to modularize you're Java application. It originally comes from the embed world but through Eclipse it came to the desktop and now it goes to the server. Need another reason? Even the Spring guys are enthusiastic about OSGi.
In a year or two, everyone will talk about OSGi it they talk about Java. See you at the talk on Wednesday.