I have frequently assigned this book as the primary text in behavioral economics courses at Harvard and at Duke. It offers an outstanding collection of some of the best professional articles in this field, with particularly good coverage on applied articles.
As the title suggests, it does not include many of the seminal papers in behavioral economics, and in particular readers should also make sure to find Tversky and Kahneman's seminar 1979 paper on prospect theory, published in the journal Econometrica. This article, and many other seminal papers of behavioral economics, are collected in Kahneman and Tversky's edited volume Choices, Values, and Frames. (I also usually assign parts of Colin Camerer's excellent Behavioral Game Theory.) While students of behavioral economics should make a point of reading the 1979 article, I recommend doing so only after reading Camerer's excellent overview of some applications in chapter 5 of Advances in Behavioral Economics; you can also find an excellent presentation of the key concepts if you download the video of Daniel Kahneman's Nobel Prize lecture from the Nobel website.