On the rare occassion that I'm in the branch near work, I get confused looks from the staff when I ask for an extra shot of espresso (I like my latte to taste of coffee, not hot milk); even then, it's still piss weak. Kevin Day described their coffee as "homeopathic," and I'm inclined to agree with him.
Don't even think about getting an iced coffee from them, either, as that really is brown milk (but mixed with ice!) - they don't even brew a shot to put in, just pull a bottle of pre-flavoured milk from the fridge. Yuk.