Times up!

Needs at least 4 people, a pen and paper and a bowl/hat. And a stopwatch.
Tear the paper so you have about 25-35 pieces of similar size, then give these out to the players. Everyone writes down a famou name on each of their pieces of paper. Shuffle them up in the bowl. Divide into teams. Set stopwatch for 1 minute.
Round 1: one member of the first team describes the name on the paper without using any of the words written on the paper. The team gets to keep the paper if it's correctly guessed. After a minute, play passes to the next team with a reduced number of papers in the bowl. This continues until all names have been guessed. Count the number of pieces of paper kept by each team and make a note. Return the papers to the bowl.
Round 2: same as round one, but the describer can now only use one word. No miming, no eye signals, one. Word.
Round 3: same as the previous rounds but the describer must stay absolutely silent and can only mime. The team that scored the most over 3 rounds wins.

I've played this with strangers and with friends and family alike and it's always fun.