I liked the book 1984 a lot, even even it was scary.
I agree, it is a dystopian novel by George Orwell. It freaked me out for many days.
Another book I liked by Orwell was Animal Farms, that was more like really depressing.
Animal Farm is an allegorical novel which is a bit different from 1984. I personally liked 1984 more.
Yes Animal farm was more about communism, 1984 a bout totalitarianism and Big Brother I think, but I read them a long time ago.
The common themes in both are things like awareness of social injustice and opposition to totalitarianism. These are important issues today. 
 With all the communication been monitored 1984 seem more relevant today than when it was written.
I agree, censorship and surveillance is a big issue nowadays than before. George Orwell seems to have predicted this decades ago.
Yes I guess the reason his books are classics now,  do you remember any other books written by him?
Another is "The Road to Wigan Pier" (1937), documenting his experience of working class life, but it wasn't as popular as 1984 and Animal Farm.