With a work ethic they describe as ?maniacal and around-the-clock,? the husband-and-wife team of Brian Flynn and Dora Drimalas tackle a staggering variety of projects?from corporate communications to textile design to, yes, manufacturing toy monsters?for their own store and such super-star clients as Nike. They do it all, running three complementary design businesses?Hybrid Design, Hybrid-Home, and Super7?on an assortment of Mac computers. ?If you?re a designer,? says Flynn, ?you use a Mac. I know people who use Illustrator or Photoshop on the PC, but it?s just not the same. If you want to be creative on the computer, you?re going to get a Mac.?