How about something besides video?
Is there a scientific application that runs better on Mac for EXACTLY the same reason that it can stream 7 videos simultaneously?
Simulations require an enormous amount of processing capacity to develop scenarios with multiple parameters in constant flux. This applies to everything from microbiology to medicine to cosmology. Mass General Hospital has a Mac-only program that does 3D visualization of MRI data that is currently being used to track nerve impulses in the search for answers to migraines, for one example.