Read it first when I was 16, at the recommendation of my literature teacher in high school. For the past... - darn, this was long ago! - ...more than 20 years, I've read it at least once a year, and intend to do that for as long as I can read.
You will need to enter the repositories by hand, though. Mind you, writing a small tool that'd list the most popular/forked/starred/etc C repos, and do a search for you in those should be a few minute task.