Ben Shneiderman is a Professor in the Department of Computer Science, Founding Director (1983--2000) of the Human-Computer Interaction Laboratory (http://www.cs.umd.edu/hcil), and Member of the Institute for Advanced Computer Studies and the Institute for Systems Research, all at the University of Maryland at College Park. He is a Fellow of the ACM and AAAS and received the ACM CHI (Computer Human Interaction) Lifetime Achievement Award. His books, research papers, and frequent lectures have made him an international leader in this emerging discipline. For relaxation he likes biking, hiking, skiing, and travel. Catherine Plaisant is Associate Research Scientist at the Human-Computer Interaction Laboratory of the University of Maryland Institute for Advanced Computer Studies. She earned a Doctorat d'Ingenieur degree in France in 1982 and has been conducting research in the field of human-computer interaction since then. In 1987, she joined Professor Shneiderman at the University of Maryland, where she has worked with students and members of the lab, throughout the growth of the field of human-computer interaction. Her research contributions range from focused interaction techniques to innovative visualizations validated with user studies to practical applications developed with industrial partners. Maxine S. Cohen is a Professor in the Graduate School of Computer and Information Sciences at Nova Southeastern University in Fort Lauderdale, Florida where she teaches graduate courses in Human-Computer Interaction (HCI). Before joining NSU, she worked at IBM in the User Centered Design department. Prior to IBM, she was a faculty member in the Computer Science department, in the Watson School of Engineering at the State University of New York at Binghamton. She has been teaching and working in the HCI field for over 20 years. She received a B.A. in Mathematics from the University of Vermont, a M.S. (specialization Computer Science) and a Ph.D. (specialization Systems Science) from the State University of New York at Binghamton. Steven M. Jacobs recently retired from the aerospace industry and is now a lecturer at Northern Arizona University, Flagstaff, Arizona. He was formerly with Northrop Grumman Mission Systems in Carson, California. Mr. Jacobs managed engineers developing user interface and web applications software for various government and commercial applications. He was also Adjunct Assistant Professor at the University of Southern California for 17 years, where he developed and taught their graduate computer science courses in user interface design and human performance engineering. He has also taught short courses in similar topics for UCLA Extension and ACM. He received his M.S.C.S. from UCLA, B.A. in Mathematics from Monmouth University (N.J.).