Today on Google.com is a special logo for Les Paul's 96th birthday. Les Paul needs absolutely no introduction or explanation from me.
The logo is unbelievable!
It let's you actually play the guitar. Not only that, you can record yourself and then share the recording with friends.
It is really really cool and as Matt said, it might be Google's coolest logo ever.
Here is a good video of the logo:
Forum discussion at Google Web Search Help and Google Blogoscoped Forums.
