Passionate - seems to be the 'in' word at the moment - it's no longer good enough to love your job, football team, hobbby etc. - you have to be passionate about them.
Cushtie, banter, munchies, man-[bag/drawer/pride/flu, ie anything really], skinny (as in latte), tall (as in latte), grande (as in latte), "can I get...?" I'll stop there or I'll be here all night - I'm such a grumpy old man.