Dave Gorman did a bit on a couple of his shows about it and apparently Twitter is rife with people not knowing the original phrase.
Ah, yes! He reprised his Catphrase feature on his new programme (ably assisted by the lovely Mr Roast Potatoes, of course). The one that left me open-mouthed was ‘on except a bowl’ as in ‘I will not tolerate this, it is completely on except a bowl’. I had a little look for this ‘phrase’ online and there are indeed some people who have written it, apparently in all seriousness. [shocked]
When you come back with more, hopefully, your comma button will be fixed.
Technically, that’s bad grammar too. Everybody (including me, I must admit) uses ‘hopefully’ in that way, but, as an adverb, it corresponds with the verb and therefore the subject of the verb. Strictly speaking, you’re saying that the comma button will be full of hope whilst it is being fixed. 
Nope, I absolutely don't. The letter H is snobbishly traditionally pronounced Aitch and thus begins with a vowel. Therefore it is an H.
Fun fact: there are two 5-letter words in the English language from which one can remove four of the letters and the word will still be pronounced in the same way. Both of them have been mentioned on this thread already!
Yes – I too always hear Manuel in my head whenever somebody writes ‘que’ 
I also think naive is acceptable. It's an English word which derives from the French naïve. You could put that in the OED. Expecting people to learn to do an accented letter i on their laptop keyboard just for the sake of saying naïve is unreasonable.
Aside from the accent issue, does anybody else get irrationally irritated when people refer to a male person as being naïve? A lot of people also similarly confuse blond and blonde.