Lukas Mathis studied Computer Science/Software Engineering and Ergonomics/Usability at ETH Zürich and works as a software engineer and user interface designer for a Swiss software company creating workflow management software. His first computer was a Performa 450, his first programming language was HyperTalk, his first electric guitar was a cheap Peavey, his first video game was a VCS 2600 and his current snowboard is from Lib Tech. He lives in a small cottage in a remote part of the Swiss Alps. You can follow him on Twitter.
Mac OS X Zip Expanding Utility
Firefox (and possibly other applications) may ask you what you want to do with .zip archives that you download from the Internet. If you want to expand them with Mac OS X (rather than StuffIt Expander), you may be unsure of which application actually does the job. You're looking for Archive Utility (in Leopard and later) or BOMArchiveHelper (in Tiger). In either case, the application is stored in Hard Drive/System/Library/Core Services/. Don't move it from there, though, or you'll confuse matters.