Taking this course was an great way to learn more about compilers and fill a hole in my CS curriculum. Professor Alex Aiken is a great instructor and covers a good amount of material. I learned a lot about compiler construction despite having toyed with my own compiler before starting the course. The programming assignments were particularly tough, giving me useful experience in building compilers and a great sense of achievement.
The class is good, but very time-consuming and spends a lot of time on theory. Expect to spend at least 10 hours a week between lectures, quizzes, and the project.
[1] https://www.coursera.org/course/compilers