I do actually know one ... I use it to decide who goes first at pool and stuff like that but it's a variation of a drinking game called "spoof" which I call "virtual spoof". Spoof is a game where where everyone holds between 0 and 3 coins in their hand and has to guess the total number of coins in everyone's hands. For virtual spoof you don't even need coins. You decide on a number of coins you are holding and everyone else does the same. Then everyone guesses the total number of imaginary coins being held in everyone's hands. But it doesn't end there, oh no. Each guess has its own call. So if you want to guess that nobody is holding any coins or that there is a total of seven imaginary coins being held, you make a call according to this chart: 0 = "Spoof" 1 = "Christina Aquilera" 2 = a country of the world (eg "China") 3 = a monarch of Britain (eg "Queen Anne") 4 = a well known architectural structure (eg "Eiffel Tower") 5 = the name of a sunken ship (eg "Mary Rose") 6 = the name of a scientist (eg "Richard Dawkins") 7 = a Prime Minister of Britain (eg "Pitt the Younger") 8 = "Avril Lavigne" 9 = a phrase in German (eg "Ich bin ein Berliner") No two people can make the same call, and all calls must be legal. Needless to say this gets very confusing if there are more than three players. There is a plethora of rules concerning etiquette and gameplay, but those are the basics. After everyone has made their call, the players reveal their hand of imaginary coins and the total is added up. When somebody wins by guessing the correct number, they have to get everyone else a drink.
For variety, any of these games can be played using vodka jelly placed on naked people. Generally I can't condone drinking games though: why not just get hammered first?
'I've never....' involves everyone sitting in a circle with a drink, and then one by one you take it in turns at saying 'I've never....' followed by a statement such as '....been in a helicopter'. Then everyone (including yourself) who has been in a helicopter has to stand up and take a gulp of drink. However if no one stands up then you have to down your drink. You can target people the more you know about them which is handy. Only problem is it envolves a lot of standing up and sitting down! Plus the more drunk you get, the harder the game becomes!