Coke and Pepsi
This is a popular game because everyone old and young can play. Two lines across the dance floor, 1 Coke and 1 Pepsi. When one name is called that side runs to the other side and sits on the knee of their partner. Last ones there are out. You can mix this game up by using other names and other things to do, i.e. call out Seven-Up and Both Lines run to the middle and high 5 their partner, say Star Trek and everyone raises their right hand up and yells "BEAM ME UP SCOTTY", or you can call out the name of the guest of honor and everyone points at them and yells out "YOU ARE THE GREATEST!"