What you might have been

an expert in user-interface design, like Tog

an inventor, perhaps working at ideo

a comic book artist

a CGI artist / special effects person at Pixar or Lucas Arts

a video-game designer/coder at Electronic Arts or Blizzard

a famous musician - synthesizer / voice / guitar

lead programmer/designer for PhotoShop, Microsoft Word, iMac, iPod

a spy sent out on international missions

a famous architect