I terms of the Gursikhs I know, there jeevan was transformed by meeting Baba Mann Singh. One Singh told me he was a sehajdhari Sikh and someone gave him a tape (in those days not everyone had cd players) to listen to. He played it and couldn't get enough of the parchaar. He said I just was drawn by the simple kirtan.
He kept his Kesh and eventually took Amrit. He then took it upon himself to encourage others around him to stop drinking and smoking and turn to Sikhi.
This Singh has a lot more sharda and pyar for Guru Granth Sahib Ji than most i know. He puts this down to Baba Mann Singh and the parchaar they do.
I won't go into detail about any individual on here as it is not appropriate. I know of many others who were influenced by Baba Mann Singh's parchaar who have been involved in active Sikhi Parchaar and Panth Seva.
akjbabbr talk for yourself...don't include me in your 'we'. Judging someone by far, or based on unproved allegations is something we all have to lose as Sikhs. His jeevan looks very good from where i stand and he has done far more than you for the Panth.