Like speed dating. Split the group into 2 equal groups. Have the groups stand in two concentric circles with the outside circle facing in and the inside circle facing out, each person should be facing a partner. Give the group 3-4 questions to ask each other (ie. Name, place you were born, what’s 3 things you’d take into the Big Brother house? Etc.). The partners have 2-3 minutes to ask the questions and find out the answers before the leader of the activity rings a bell (or similar) and the partners must change (ie. Inside circle moves one person to the right or outside circle moves two people to the left, etc.). Repeat the process till everyone has met each other or till time allows. Select people to share with the group who they met and the answers to the questions.
Note: This activity requires a bit of room.