I have to admit doing No. 5 and 6 :) I often use "Ah, jinjja!" and "Mendokuse!" while having an expression similar to drama characters :D And I have realized I have subconsciously bowed before, e.g. when saying "Thank you" to an Italian professor :D
And No. 2 is next on my to-do-list!
And No. 2 is next on my to-do-list!