We've got one here who ends every sentence with "yeah?" as if to drive in the importance of whatever he's saying.
Im my job running the payroll department, I have to ask colleagues for info on our clients, ie how many directors etc. Every time I have to ask him for info he'll turn around and say "You need to go and find this out, yeah?" which is
a) A world class statement in the {bleep}ing obvious
b) Irritating in the extreme. Particularly when said individual is sitting on the info all along and simply can't be arsed to hand over the file on his desk.