I'm interested in this too, like where and when to use each phrase. Here's an example of Ryll's case (quite the exact case actually) from H20 - footprints in the sand.

http://au.youtube.com/watch?v=ckDwpln_9rE#t=6m22s

If anyone's interested, there's another example at 6:55

You're back home, right Ani, so I'm not excluding you from this?