I usually say something like, "I'm a programmer. I make apps for the iPhone." As soon as I utter the word "programmer", I can see the light in their eyes begin to fade - but mentioning the iPhone brings them back and suddenly I'm a person with a cool job. The nice thing about being an iPhone dev is I can avoid the usual "computer stuff" response that results in doing tech support because people don't realize that the iPhone is just a computer platform. :) I also have the advantage of having previously worked for Tapulous (as one of the original employees, actually), so people who have an iPhone/iPod have almost universally heard of Tap Tap Revenge - which has/had a little of my code buried in there somewhere.