var x = new AwfullyLongClassName();
These two and quite a few more made me dislike C# back when I had to use it. Way too talkative, way too repetitive, way too low-level, way too restrict(ive|ed).
It's still pretty much like that. I've been working with C# for about 9 months now (not my choice, but the job pays the bills) and C# is still frustrating me to no end. I expected it to be less frustrating as i got to learn the language, but it doesn't; I still find myself longing for the flexibility and expressiveness that perl offers.