I have no idea what's this one is called but goes down well in our large family group.
Every person writes 3 names on a scrap of paper (we normally theme it at this point cartoon charcters, celebrities, disney characters etc). It doesn't matter if you get duplicates, we once played with 5 Kate midletons!
Split into a least 2 teams
Describe as many of the names to your group for them to guess with out saying their name for 30 seconds. Each team takes it in turns until all have been correctly guessed. Add up the total for each team and keep a note of the score.
Put all names back in and each team then takes turns to guess all the names again but by silent actions. When everything guessed add each teams score to previous total.
Repeat again but for single freezer frame. Total final scores and declare winner.
It's good for easily distracted small children as it always has people who are not currently playing free to play with the small kids.