Today is the 40th anniversary of Sesame Street and the 20th of Wallace and Gromit, the two beloved children shows. For the special day, Google has several logos (doodles) up at the various Google properties, depending on the local preference of show.
Big Bird is the most noticed one and it is featured in the US and on 21 regional versions of Google:
Wallace & Gromit is featured in the UK and on 7 regional versions of Google:
This Sesame Street logo is on Google.be and Google.nl:
This one on Google.co.za:
This one on Google.co.in:
This one on Google.com.mx:
This one on Google.co.il:
Postscript: The Google Blog posted about this logo just minutes ago.
On November 5th, Google continued the anniversary celebration by showing off Cookie Monster:
Then on November 6th, adding a third day by showing Ernie & Bert: