I could post links to orals type lists (or dig up my old orals lists), but a lot of that stuff gets pretty specialized and it sometimes is of the extremely dry but you've got to know it category. Here's some good ones at semi random.

Carl Schorske Fin de Siecle Vienna

Stephen Kern Culture of Time and Space

(both about the birth of 'modernity' in the decades leading up to WWI)

Fritz Stern Politics of Cultural Despair (intellectual origins of the mindset that led to Fascism)

Fritz Stern Gold and Iron (Bismarck, Kaiserreich, Germans and Jews)

Robert Paxton An Anatomy of Fascism (short, excellent summary of the subject)

Stephen Kotkin Magnetic Mountain. Stalinism as Civilization (my favorite book on Stalinism, through the prism of the creation of Magnitogorsk)

Richard Evans Death in Hamburg. Society and Politics in the Cholera Years

Claudia Koonz _Mothers of the Fatherland. Women, the Family and Nazi Politics

Ian Kershaw The Nazi Dictatorship. Problems and perspectives of Interpretation (overview of the debates, updated every few years)

Brian Porter When Nationalism began to Hate. Imagining Modern Polics in Nineteenth Century Poland (ok, a bit dry but it's good and pickings are limited for good quality Polish history in English)

Larry Wolff Inventing Eastern Europe (Englightenment Europe looks east, heavily influenced by Said's Orientalism)

Jerzy Jedlicki A Suburb of Europe (East looks West)

and perhaps one that I haven't read yet, and which isn't really history but I've been meaning to read since it came out a half year ago, good author, interesting sounding reviews.
David Ost The Defeat of Solidarity. Anger and Politics in Postcommunist Europe

And three on Europe and America, might be interesting to Eurotrib readers, two of them quite recent.

Volker Berghahn America and the Intellectual Cold Wars in Europe

Victoria de Grazia Irresistable Empire. America's advance through 20th c. Europe

Mary Nolan Visions of Modernity. American Business and the Modernization of Germany (on the Weimar era)

I think that's a start ;)