At RND Solutions, where possible, we use Agile project management principles to deliver projects. For anyone looking for an overview of Agile project managment, specifically Scrum and XP, InfoQ offer an excellent book called Scrum and XP from the Trenches. This is a very pragmatic book using real world examples to explain concepts. The PDF version is free and there is also an option to buy the hard copy.

Scrum and XP from the Trenches