(Cross-posted with the YouTube Blog)

Today we join Yoko Ono in asking fans around the world to upload video tributes to John Lennon on what would have been his 70th birthday.

If you have memories to share of this legendary member of the Beatles and his music, upload a video to www.youtube.com/johnlennon and you’ll join a global chorus that includes Jeff Bridges, Jonas Brothers, Ringo Starr and the entire crowd at an Aerosmith concert.

As part of today’s celebration, you may have noticed a special YouTube logo that’s being featured in 25 different countries highlighting the artist’s famous self-portrait. This unique artwork is also part of a birthday video that you can find at www.google.com. It’s the very first time that a YouTube video has been embedded into a one-of-a-kind Google doodle—read a bit more about it in this post.

“Spread Peace. Imagine Peace.” is how Yoko suggests you celebrate the day, along with sharing your video tribute with the world.