Challenger brands are disruptive, innovative and agile. With the right product or service—and with the right marketing behind it—a challenger brand can upend business as usual. In early March, Adweek convened some of the world’s most dynamic brand leaders for two days of thought-provoking discussions and real world solutions to disrupting entire industries. To see their presentations, click the slides below. We’ll keep adding to this gallery of videos, so check back for updates. Our next big event is Brandweek, set for Sept. 14-17 in Miami.