No matter how small your development team is, I think you can get benefit from doing Scrums. I've just adapted a Scrum process for upgrading my in-house framework. I'll be the only developer on the project, but already I love the visibility that it is providing. Here is a (very abbreviated) summary of the process I'm using based on the excellent Scrum and XP from the Trenches (PDF) article but modified for the idea of Scrum for a solo developer . . .