Creed & The Grass Roots

If you're a fan of "The Office" the character that plays Creed Bratton was also in the 60's group
The Grass Roots . Can you spot which one he is? He's celebrating his 66th birthday today.
http://www.youtube.com/watch?v=hnFZsrs32Co

I found out Creed was in The Grass Roots in this episode of "The Office".
http://www.youtube.com/watch?v=9W2YuVuHZDc

Also check out Creed's Blog.
http://blog.nbc.com/CreedThoughts/