Network World has a slideshow article that showcases 18 notable Apple alumni. These are folks who spent some time at Apple and saw continued success in their career when they left Cupertino. Some of the people on the list, like Andy Rubin, are known for their roots at Apple, while others like LinkedIn co-founder Reid Hoffman are not so well-known for their stint at the Cupertino company. You can read through the full list of alumni at Network World's website.