Yes, we all love testing. OK, actually, we all hate it but recognize it as a key part of the cycle that lets us actually release code into the wild. Our GDC China has a bunch of bright guys and Steven Si just blogged on the topic. Worth a look.
Sticking on the same subject, Ethan Huang put out a post about developer involved testing and decreasing the error rate on first check in of code. It’s detailed and engendered a number of comments. I’ve learned more about testing best practices from these guys than anyone else. Again, worth a look.