The ACM Charles P. “Chuck” Thacker Breakthrough in Computing Award celebrates the late pioneer’s contributions in computing and his long-term inspirational mentorship of generations of computer scientists, by recognizing individuals with the same out-of-the-box thinking and “can-do” approach to solving the unsolved that Thacker (who received multiple awards from ACM, including Turing) exhibited. Recipients of the biennial award will deliver an “ACM Breakthrough Lecture” at a major ACM conference of their choice during the year following the announcement. Financial support for the $100,000 prize is provided by Microsoft. Nominations are now open and will be accepted through January 15, 2019.