Quote Originally Posted by English assassin
Grocers' apostrophes. (Eg using an apostrophe in a plural, "Apple's 50p a pound, banana's a pound a bunch")
OMG - this is really going rampant here in Germany - and in German spelling you don't even use the apostrophe for the genitive

But see for yourself

Some of these examples only make sense if you understand German - my personal favourite is #16