The stop and go is pretty popular. However, to comment on this post, it doesn't require the short stack to be so passive. A lot of the time it's the short stack being aggressive and putting all their chips in the middle for, at best, a 60/40 advantage. Knowing that, a lot of stacks will call the all in simply to see the coin flip eliminate them.
However, there is something psychological behind our reactions to the "all in." It automatically requires us to think for a second, and when it's a short stack, you are most likely drawing a call. It's a good philosophy if you're early in a tournament and would like to see 3 people call and pray for yours to come out on top.
Now, imagine we are in middle position with AJs and it folds to you, you have 1800 and BB is 300. You raise to 950. It demonstrates pot commitment, scaring away any old callers, and then when you push your other half in you have the same situation.
It works well either way, I just don't want people to think that the only way to pull this move off is by being passive preflop.