A video round-up is hardly complete without one of Google’s webmaster help videos featuring Matt Cutts dropping some knowledge on site owners, but beyond that, there’s quite a mix here in today’s. I’ll just let you look at them.

View other daily video round-ups here.

Google’s Matt Cutts talks about how Google treats the .co TLD:

Google celebrates 1 billion downloads for Google Earth:

Pretty cool Playstation ad:

The “Being Elmo” trailer:

Occupy Wall Street gets a rap with a Radiohead riff:

The “strange power of the placebo effect” – this has been around a while, but it’s getting shared around a lot today:

Celebrities talking about famine:

Google shares a multi-platform advertising case-study for Animal Planet:

Autolib’s car sharing initiative is getting some attention:

Google talks feature update for Google+:

IAB CEO Randall Rothenberg talks to Microsoft:

Wolfram/Mathematica talks generating random numbers: