Susan Dumais is a Senior Researcher at Microsoft Research, in the Adaptive Systems and Interaction Group. Before joining Microsoft, Sue was a researcher and director at Bellcore and Bell Labs. Her work focuses on algorithms and interfaces for improving information access. Her pioneering research spans across personal information management, question answering, information retrieval, text categorization and clustering, interfaces for combining search and browsing, and user modeling. Sue is perhaps best known as a co-developer of Latent Semantic Indexing (LSI), a statistical method for content-based retrieval which helps overcome the "vocabulary disagreement" problem. She also led the empirical efforts to validate the effectiveness of LSI in several application areas. In current work, as exemplified in her "Stuff I've Seen" project, Sue continues to demonstrate she is that rare combination of creative designer and elegant experimenter. Her many significant contributions to SIGCHI and SIGIR serve as an important bridge between the communities.