30 years of K&R is being celebrated.
This is an important book our life time and Inform IT has an article on "Leading Programmers Remember the Impact of The C Programming Language"
Roughly around 10 years ago to get myself into Software Development, I started solving all the problems at the end of the K&R book and bootstrapped my Project Uthcode for the third time. I can safely say that it turned out be successful and I owe greatly to this one book.
Later when I started contributing to Python, I focussed mostly on Python and standard library which is written in Python. Noticing how other programmers went about with CPython core, I wanted to re-read it to get into K&R get into implementation and design. That has not happened yet, but I am planning for it sometime soonish. I can get back and rely on K&R, plus I will have my experience to draw upon.