I am fascinated by the year 1968 and the amount of events that occurred during it, from the Prague Spring to the hippie movement to Mai '68 to The assassinations of RFK, MLK and Rudi Dutschke.
Since I live in a French-speaking country, Mai '68 is part of the social identity, is constantly talked about and has spawned lots of grey mainstream books; but what I know of the other events I have learned on Wikipedia. Do you know what book(s) I could spend my Christmas money on?
Mark Kurlansky's 1968: The Year the Rocked the World. It's a popular history book that is incredibly well written and well received by the academic community.
The Sixties: From Memory to History by David Farber and Long Time Gone: Sixties America Then and Now by Alexander Bloom are two books that work well with the whole decade and have some great coverage on 1968.
Other than that, /u/gent2012 offers a great book as well.