One of the finest flights I had was couple of years back into Yakutsk from DME with Krasnair.
Door to flight deck open, flight crew mixing (not drinks before you ask) happily with pax, chatting about this and that. The age range of the flight crew (4) was from 25-62 and they appeared to operate in a familiar, friendly and professional manner. I had blagged my way on the flight deck and towards the end of the sector they realised a wx diversion was necessary. Everybody got their heads into charts/plates etc. I thought it probably best to get out of the way but the FE just looked up, shook his head and motioned for me to stay.
Impossible anywhere else, I know and I'm sure the naysayers will quote rules and regulations and what-if's...but I b****y enjoyed it and felt pleased to have had the privilege of sitting with a group of guys who loved what they did.