There were a handful towards the end of my career, like Norm Hewitt's drunken incident, Mils Muliaina's watering of a bar and Justin Marshall was a bit rough around the edges in those days.
I can remember only one occasion when I needed to discipline someone. It was during the era when Warwick Taylor and Murray Pierce occupied the back of the bus and I was told I had to room with a particular player who let personal standards slip.
When I went into the room, it was a mess. I took one look, told him I didn't approve and said I would be back soon. It was vastly better on my return.
He turned out to be a one-tour wonder and I wasn't surprised. There aren't many players like that today but the All Blacks probably wouldn't invest in someone who didn't maintain standards.
A player-driven approach to discipline is the best way and it looks like the current All Blacks have things well under control.
What Aaron Cruden did recently, when he missed the plane to Argentina, was way out of line and he was disciplined accordingly - to such an extent he feared for his All Blacks future.
Mealamu is only one game short of Colin Meads' record of 362 first-class games. It's a great feat but it will be interesting to see how many more he adds.
He's still worthy of a place in the All Blacks but there are no guarantees he will be at the World Cup. He's still got 12 months to get through, which is a long time for a player with calf issues, and there is growing competition. Dane Coles has proved himself, Nathan Harris did OK before he was injured and James Parsons got a crack this morning.
Mealamu is under pressure, especially when his Super Rugby team-mate is an All Black.