Stick to the agenda. Stay on target. When things begin to veer off course, either schedule another meeting or take it to email after the meeting.
End each meeting with action items - a written list of who's going to do what and when it's expected. Yes, this means someone needs to write/type something during the meeting.
If documentation is becoming important and needed, then I strongly suggest you come up with simple standards and then stick to them.
Wiki. Wiki. Wiki. All "tribal knowledge" information useful for the team needs to go into a wiki. How to set up dev environments, common debugging tips, etc etc.
