I agree. It isn't just pure programming that I have learned either. It is learning more about tools, different apps, different workflows, and new debugging tips. Also, I don't think the experience matters. Someone fresh out of school may have a new trick to teach me or a 20 year veteran has an old school trick I never new.
Yes, it is often the non-programming tricks that allow me to be a more productive programmer. Watching other programmers use a few powerful commands in vim, plus a cool flag for grep I didn't know about, plus how to efficiently organize things in directories to quickly find things, etc. All these little tricks I learned from a couple programmers my first year probably doubled my productivity as a programmer.
