Some have called this a "pastiche of Heinlein's Starship Troopers", and - while I can see where they derive that point of view from - I have to say that I find one important difference: the characters in Scalzi's "Old Man's War" are LIKABLE; they are people I might actually choose to associate with.

Probably my favorite presentation of time travel, the idea of an inexorably advancing window in which no further changes can be made has stuck with me for many years. The core idea is fresh, the characters are believable (if not always exactly LIKABLE), and the decisions they've made will make you re-evaluate your own life. An excellent book that I would recommend to anyway.

A big fan of the concept of time travel, I really enjoyed Ms. Niffenegger's take on the concept - not knowing where you are in relationship to the broader story builds an excellent sense of suspense and tension in the reader that both allowed me to cherish each page as well as burn through the book at an alarming rate.

An excellent resource for getting myself back into Dungeons and Dragons after a 15 year break in which all the rules changed twice (or more!). Mr. Slavicsek has created the first book in the "For Dummies" series that I can recommend without feeling like I'm being condescending.

As a child, this was my first exposure to science fiction that tried to have an internally consistent set of rules. The detailed description of the theory of a tesseract built in me a hunger and an expectation that would shadow most of the books I would read for the rest of my life - don't treat me like someone who can't understand your universe!