Email the presentation to everyone in attendance beforehand, well enough in advance for people to pour over, spend some time on and approach you BEFORE you go t

Email the presentation to everyone in attendance beforehand, well enough in advance for people to pour over, spend some time on and approach you BEFORE you go to the conference room. Then, as you're giving your presentation you've got target points to reiterate on instead of burning cycles in a shotgun Q&A session. The added benefit is that increases information bandwidth, the presentation is constantly with the members for later review.