Comment by astrolx
In French, I find that translations of Edgard Allan Poe by Baudelaire are really nice. I enjoy them as much as the original version. Sci-fi translations of US science fiction classics (Orwell, Bradbury etc..) are usually excellent too. I find myself re-reading these books in French and/or English according to mood.
On the other hans, I find that French translators usually utterly fail to capture the dry kind humor from British authors. From Jane Austen to Lord of the Rings, it reads so serious in French translations!!