We bought the Lonely Planet German Phrasebook, along with an electronic translator, for a recent trip to Austria. I found this little £3 book much more useful than the £35 translator, especially for phrases.
The book is divided into sections, such as Shopping, Getting Around and Social. There is also a dictionary at the end of the book, and smaller dictionaries within the different sections. The food dictionary, for example, is excellent and helped us decipher many restaurant menus on our trip.
The pronunciations are easy to understand, and there is a short introduction to the language too. Just by leafing through this phrasebook during my free time, I was able to pick up many different words and phrases that I later heard, or used, in conversation.
This book starts with the most basic phrases (hello, goodbye, please, thank you) but it is also great for intermediate German speakers, with many useful phrases. Some of them are a bit bizarre - like "faster", "harder", and "I can't get it up" in the Romance section - but even those bits were very entertaining!
The only criticism is that, while the book explains how to pronounce German consonants, there is no explanation of how to pronounce vowels. The individual pronunciations make up for this, but a short section on vowel sounds would still have been helpful.