La Disparition by George Perec in French, translated to English as A Void. Neither version uses the letter 'e'. I think the French original is better since the translator had to cheat a bit with the numbers (5 and 26 appear frequently for self-referential reasons, and when spelled in French don't use e, but are translated as numerals.) but was still impressed. I read the side-by-side translated version, although I'm only marginally literate in French.