At TechCrunch50 today, Facebook announced that they had surged past 300M users and reached cash flow profitability in the past quarter.
They then ran through a launch of Facebook Prototypes (kind of like Google Labs, but for Facebook).
Then they did a presentation on the value of Facebook Connect for startups, and invited the CEO of JibJab up on stage for a presentation on best practices for using Facebook Connect (I posted a video of that here).
Here's the Q&A session with the Facebook team at the end of the other presentations. There is also a link to a gallery with the slides from the session below.