I think I say both "neether" and "n-eye-ther", just to be awkward! I suspect "pot-ah-to" was just something Gershwin made up for the song. I've never heard anyone say "ersters". Anyway, always a joy to see Fred and Ginger dancing.
I saw an article at the weekend which said that Americans are now using British slang/words like "love" (as in, "how are you, love?") and "ring" where they would normally say "call". Apparently "suck it and see" is becoming popular but they see sexual overtones where there are none! I suppose it's the Downton Abbey Effect - I haven't watched it since the first series, having become infuriated by the anachronistic language.
Brilliant wordplay there, SJ! 
A couple of Wenglish words seen on Twitter today (people of a nervous disposition should look away now) "ffyc" and "bolycs".
Loved "My Cousin Vinny"! Fred Gwynne was so wonderful as the judge. Never mind Birming-HAM, I remember an American came to our shop in Carmarthen when I was but a lass and asked how to get to "Sly-datch" (Clydach).
I'll be interested to hear more comments about "Elementary", Harold. Miller is a good friend of Benedict Cumberbatch who plays "Sherlock" here in the UK (and is going to be a baddie in the new Star Trek movie). I like "Sherlock" and B Cumberbatch is a terrific actor (see also "Parade's End") but no one is as good as Jeremy Brett was as Sherlock Holmes (or Edward Hardwicke as Watson, come to that). You should have a look at "Revenge" as it's a sort of Count of Monte Cristo transplanted to The Hamptons with a girl instead of a man - it's now, I think, in its second season in the US although we are coming to the end of the first season.
There's also "yet" used at the end of a sentence but perhaps not so much these days.
Looking back at this long conversation, "pudding" is a word used for "dessert", nothing to do with fruitcake (which is eaten at tea-time or at picnics). Also, in Britain, we have pudding/dessert (followed by cheese if you have room in your belly!) and then we have coffee - not both together. One might have coffee with petit fours instead of pudding/cheese, of course.
We have the equivalent, "Strictly Come Dancing" which I don't watch but cannot get away from in the newspapers and on Twitter! I do know that most of our celebrities are well-known people that I recognise (Victoria Pendleton the Olympic cyclist has been taking part). I like "Castle", it's fun. I'm hooked on "Revenge" at the moment!
