I plan on getting my MBA ... I'd like to start the process now (studying for GMAT...) so I can start in a year or so.
Like people have already said, getting the MBA is great, but it's worthless if you don't have any work experience.
I have several friends currently in the MBA program @ TCU & SMU, and EVERYONE in those classes has been in the work world for at least 2 years. It helps to use your "real world" experience and apply it to your classes, projects, etc.
One of the upsides of waiting until you get a real job is that a lot of companies will actually pay some or all of the costs to obtain your MBA