What are people saying about TDD?

Here are some of the positive things that people are saying about Test Driven Development.

Said by potatoihave on Twitter.

Huge payback today as I made big changes to a library, and my tests saved me from surprise after surprise.

Said by panesofglass on Twitter.

I think I'm finally really getting #tdd, and I can't imagine how people want to war against it. It makes coding so flipping easy.

Said by runegri on Twitter.
TDD is so incredibly nice! I just did a major refactoring of my pet project and I know for certain that I didn't break anything

Said by oliyoung on Twitter.
I really don't know how you do anything like a decent webapp without TDD and a good CI framework these days