The 2015 Economics "Nobel": Angus Deaton
Deaton's "Understanding Consumption" (1993) was one of the major sources I used when doing seminar work for my master's. In the end I decided to write my thesis about a different (somewhat related) subject after realising the empirical difficulties with what I planned on doing.

I have since chosen a different research subject, but Understanding Consumption is a book I have spent many hours with. It's a bit dated now, but still a decent read if you want to know about consumption and saving.