It is a truth not yet universally acknowledged that a venture based on information must be in want of a librarian. Librarians offer expertise in organizing and managing information, clarifying and supporting people's information needs, and enhancing people's information literacy skills. There are innumerable endeavors today in education, health, business, government, and other domains that draw heavily on information resources. One such endeavor in higher education is the recently burgeoning massive open online course (MOOC). MOOCs are online classes that welcome any and all enrollees, free of charge, amassing rosters that reach several hundred to several hundred thousand participants. Information flows into, around, and out of MOOC environments through instructor-selected and -generated materials, participant-selected and -generated materials, and instructor-participant and peer-to-peer communication. MOOCs have the potential to create unprecedented levels of access to quality higher education on a global scale, building richly diverse learning communities. Furthermore, MOOCs provide opportunities to disrupt traditional pedagogies, leveraging technology to foster creativity and collaboration while enabling research and development around best practices in online teaching and learning. There are numerous ways in which librarians can use their information expertise to enhance MOOCs and forge new roles in this evolving educational arena.