After reading about the new Acid 3 test, I mossied on over and ran the test. Even though it didn't get a 100/100 score I was never-the-less impressed with how well it performed.
I'm somewhat surprised by the scores on Anomalous Anomaly. AA's chart shows Firefox 18.104.22.168 scoring higher than 3.0b3, while my testing shows just the opposite. What's more 3.0b3's rendering is a lot closer to the reference rendering than 22.214.171.124's. Regardless of the scoring there's one thing I will say about Firefox 3. It's fast. Very, very fast.