My mother used to work as a teacher aide, and in that time, she ran into some absolutely dreadful names. Unfortunately, I can only remember one, but it was the one that shocked me the most.
I don't know if this occurs in other countries, but when Asians immigrate to Australia, it's not unusual for them to take on a new English first name in place of their Asian name. For some, this is just a nickname, while others change their name by deed poll. For example, one girl in my maths class in high school was Nanami on the roll, but we all knew her as Becky. All of the Asians I knew in high school who did this chose pretty normal names (which was often a shame, as their Asian names were a whole lot more interesting), but my mother taught one boy in primary school - he was only about seven - whose parents allowed him to pick his own name and he chose an absolute shocker. Homer. As in Homer Simpson. I would like to say "no, he was just a really bright kid who adored the Iliad!", but nope, he took his name from Homer Simpson, and his parents changed it by deed poll. I think that merits a "WTF?"
Also, personally, my name is André, which has never caused anyone pronunciation difficulties (I suppose thanks in part to André Agassi, though I got tired of "oh, as in Agassi!", especially as my parents didn't name me after him), but it seems people have tremendous trouble spelling it. Now, I'm cool with people calling me "Andre" and I often put that on electronic forms myself to avoid difficulties with computers that don't recognise é (to get é, hold down ALT and hit 1 then 3 then 0 on the numberpad). But some spellings have left me dumbfounded. A few people spell my name "Andrea", which irritates the hell out of me. Some other odd spellings I've seen include "Andray" (phonetic, I guess), "Ondre", and "Andrae". And some people seem to just assume a 'w' is missing and call me "Andrew".
And then there's the matter of my stupid last name (I'm truly tempted to change it to Axver). It's more common as a first name, and back in high school, it seemed every substitute on earth lost the ability to read the roll correctly and called out my last name as my first name. I also nearly had to have a bloody argument recently when I was trying to get electricity connected to my new apartment because the person thought I was giving my first name when they asked for my last name. Bah.