Yes, you have your boss's attention for a moment, and yes, you want to point out all the many millions of wonderful things you're working on and ask every single question that's occurred to you since the last meeting. But the meeting, let's assume, has a specific agenda, and proving that you are the model employee is not part of it. As Douglas Merrill, author of Getting Organized in the Google Era, wrote in Forbes, "I try to limit meetings to 30 minutes or less. It helps me and everyone else stay focused. ... Besides, people tend to lose interest when meetings drag on." Don't be the meeting dragger.