While I am 100% with Yves Gingras that Economics should not have a Nobel, I am very pleased that Paul Krugman has been awarded the The Bank of Sweden Prize in Economic Sciences in Memory of Alfred Nobel.
PK has been a voice of sense on many issues, not least the Financial crisis - I have often linked to his NYT column from this blog. My personal favourite amongst his wide-ranging economics are his books and articles on Economic Geography. His "Self Organising Economy" has a particularly nice account of the forces that lead to the emergence of Edge Cities. Clear, simple and essential.