When I start to work on a programmign project I am conditioned to open terminal and change to that directory. And when working in xcode I used to run open MyBigLongProjectName.xcodeproj, but have to deal with the fact that I normally have other files in that directory that start with MyBigLongProjectName–making tab compleation annoying. The solution to this was to make an xcode alias:
alias xcode="open *.xcodeproj"
Now I can switch from terminal to xcode and back with out breaking my pace.