I love that film and think its a great concept.
I try to do this kind of thing when I can. For eg. when I park on the side of the road and pay for parking, if I have some time left on the ticket, I pass it on to someone else. I do this alot and recently, someone did it to me, I was chuffed!
Or if someone is short a few pence on something I’ll give it to them – and this has happened back to me as well when I was trying to pay for parking and the machine would not take my fiver, I was about to head off and get change when a lovely woman popped a euro in and paid for me.
Its nice to be nice!!