I do recognise when the CC have had a long trip or a long day and give them the latitude one desrves when tired. I go out of BHX quite often on BA Connect to Milan and aer Lingus to dublin. Last week I flew for the first time on SN Brussels, recommended by my secretary and I must say the CC were great they were just like the old days. I don't expect grapes and wine service or even a smile but there is definetly an atmosphere on some flights were the CC are really unhappy as mentioned above in another persons comments. I notice this and if the opportunity arises I ask the CC have they had a long day to try and break the atmosphere. I work in aviation too and fly on many aircraft types but I still think it is curteous to stop and listen to the safety brief and show the CC some due respect.