Interesting Talk: "So you think you need a rewrite?"

I've just watched this great talk about what I'm currently working on: a rewrite.

• So you think you need a rewrite? by Chad Fowler and Rich Kilmer.

It contains a lot of pearls of wisdom.
They also recommended the book Working effectively with legacy code by Michael Feathers.
Coincidentally, I'm reading this book at the moment and I'm loving it. I think it's interesting to read it even if you're not working with legacy code because it makes you think a lot about dependencies, design and tests.