For the benefit of the local biomedical community, I have assembled a list of people and firms who do graphics work, medical illustrations, road show presentations, corporate graphics, and other services to make your presentations look good!
Tolpa Studios, Inc - Illustration and motion graphics for science and technology
Graphica Inc - Branding, photography, copywriting, web design, branded environments, and trademark services
Arkitek Studios - A full production animation studio, specializing in 2D and 3D science animations
Cognition Studio Inc. - Specializes in bio-medical illustration, graphic and information design to interpret complex science for a broader audience
Tabletop Whale - Infographics on a variety of biology and other science area topics
Lavalobe Media - Medical animation services
Duarte Diagrammer - Inexpensive downloadable diagrams that you can purchase and use to illustrate your Powerpoint or similar presentations.