If you call a meeting, make sure to send out an agenda ahead of time. This gets everyone on the same page as to what is to be covered and in how much time. It also is a way to ensure you cover what you need to in the time you have. It's a great way to prepare your participants so they can be ready with some answers when you meet. If you get called to a meeting, make sure you get the agenda ahead of time. No agenda, no meeting.
Do your meetings have agendas? How well do you follow them? How effective are they?