I went to link and read the story you had posted @Visrom - it is really great. I too had been told a very similar story in childhood - one where Lord Vishnu ask Narad to carry a deepa around the cottage in the high winds without letting the flame to extinguish. As in the other tale, Narad must work so hard to keep the flame alight that he forgets to chant "Narayan, Narayan." Lord Vishnu explains that the average human being is working so hard just to keep life going each day that pausing to remember the Lord is an act of devotion.
I absolutely loved this story, too, and have always kept it close to my heart. Ironically, as I grew up, I found that japping and chanting actually helped me to concentrate and work better in life - so if I had been asked to carry the deepa I would have ended up "Ram Ram Ram" - ing the whole way round the cottage! This is also how I get through my days - I do call for help and have never been left wanting.
Does not Krishna say to Arjun that anyone practicing any faith or even acting with dharm, in any land, in any way, all those would come to him in the end? This is the very essence os God - I do not necesarily think he even meant that they would necessarily come to "him", Krishna, as Arjun beheld him, but they would all come, in the end, to that loving universal Om.
And as for smilingly calling the college boy a "Krishna"...I think Krishna himself would have applauded! After all, he was the first one to make a joke. In a universe like this, even God needs a healthy sense of humour!