Pros:  Big fun
Cons:  Can be frustrating and take forever, solution is not guaranteed!

A group of people (more than 3 but not too many!) huddle together in a
close circle.  Everyone sticks out their hands and grabs hold of one
other person's hand (only two hands should be connected to each other).

Then the circle pulls back and the group tries to work together to "untie"
the knot, by climbing over or under the other people, but *never* letting
go of the hands they are holding.

This is a good team game as well, be ther first team to untie!