This could be your own class, students in your school, or ask another school to join you online. Reserve an Online Chat room through the project manager for an hour. Use a section of Team bios for a game of 20 questions. This should be done after ample time has been given to study the team members bios - either as a culminating activity, after reading the bios as an assignment, or after a series of Chats. For each yes answer, the student may ask another question.
Play continues around the room until the correct team member is guessed.
Divide the class in half. Armed with their facts, students take turns presenting themselves to the opposite team. Teams take turns giving each member a chance to present their team member to the opposite team, the opposite team accumulating points each time they need another fact until they guess the team member. The team with the least points at the end is the winner. Have students work in pairs.