As the creators of the Online Macromolecular Museum (OMM) explain, macromolecules are "scientific objects in much the same sense as fossil bones or dried specimens: they can be archived, studied, and displayed in aesthetically pleasing, educational exhibits." OMM is a valuable resource for visualizing structures involved in cellular processes, providing virtual galleries devoted to catalysis, membrane biology, ribonucleoproteins, DNA/RNA polymerization, and much more. Each gallery contains interactive tutorials, which are fun to explore even if you're not in the mood to actually learn anything. OMM is maintained by David Marcey at California Lutheran University.