[balabaster]

I've never heard 'on accident' out of a British person, even living in Canada. I've heard it out of many Canadians and Americans alike - but I've equally heard many of them use 'by accident'. I hadn't registered the generational divide though. I thought it was just commonly used in both forms [even though I personally correct them in my head every time they do it]. It grates on me when they use "I could care less".

What also bothers me that I've heard out of many British people, but never yet a Canadian or American is 'can I lend that thing from you?'... you can't lend something from its owner. As the lender, you are the owner of the property to be lent. Thus you can lend something to someone or borrow it from them, but you can't borrow it to someone or lend it from someone.