We all know it as the engineers who made iPhone possible.
I don't know if he was responsible, but null-terminated strings has got to be one of the worst mistakes in computer history.
That said, how is the significance of C and Unix "overblown"?
I agree Jobs was brilliant at manipulating people, I don't agree that that should be celebrated.
C and Unix weren't and aren't bad, but they are overestimated in comments on this site a lot. They weren't masterpieces. The Mac was a masterpiece IMHO. Credit for the Mac goes to Xerox PARC and to Engelbart's lab at Stanford Research Institute, but also to Jobs for recognizing the value of the work and leading the first implementation of it available to a large fraction of the population.