According to JustJared.com, Larry King will host a star-studded telethon on Monday (June 21) to benefit relief efforts for those affected by the oil spill in the Gulf Coast. Celebrity guests including Cameron Diaz, Sting, Justin Bieber and Lenny Kravitz will drop by both via satellite and on set. Celebs are also expected to take viewers’ calls.

Ryan Seacrest will be manning the online side of the show with a “Social Suite” for Facebook and Twitter users.

Monday’s Larry King Live telethon will air from 8-10 p.m. EST on CNN. Don’t you just love Cameron for doing good things like this?

Christie’s is planning to auction a glittering list of celebrity items in honour of Earth Day on April 22, according to a statement Thursday. Christie’s Green Auction:v A Bid To Save The Earth, will feature activities such as a tour of Central Park with Candice Bergen, a day on the set with actor Hugh Jackman, a cruise with David Rockefeller Jr and a private lunch and falconry lesson from Robert F Kennedy Jr.

Among the other offerings: Cameron Diaz will take one person to the premiere of The Green Hornet, Sigourney Weaver will hold a private screening of Avatar, David Duchovny will take someone out to lunch and fashion designer Vera Wang is offering a 10,000-dollar shopping spree.

Visit Christie’s.com for more information about this great cause. You can also bid on tickets to the premiere of Shrek Forever After by clicking here!

On January 22, Cameron Diaz participated in the Hope For Haiti Now telethon in Los Angeles. She answered phones at the charity event, which raised over $58 million and counting! Check out 7 pictures of Cameron at the event, two of them even feature her ex-boyfriend Justin Timberlake (yes, they are friends). Also, go to hopeforhaitinow.org to see what you can do.

Cameron Diaz surprised Boston Celtics’ J.R. Giddens and Bill Walker on September 11 when she turned up to get her hands dirty at the team’s beautifying project at the Young Achievers Pilot School in Mattapan. Cameron helped to dig new flower beds at the school to mark the National Day of Service and Remembrance, a nation-wide observance for the victims of the 9/11 terrorist attacks.

“She wasn’t messing around,” said Celtics spokesguy Christian Megliola, adding that the actress is a volunteer with a City Year-type organization in Los Angeles. “She dug right in. And she was very gracious.”

Click on the picture above for more.

Cameron Diaz will be joining fellow actresses Meg Ryan and Goldie Hawn in Los Angeles on Saturday (tonight) to take part in Pangea Day, a film festival intended to promote unity and tolerance by shedding light on different cultures and the issues endemic to particular spots around the globe.

“We all share the same planet and we only have one of ‘em, and the more that we know about each other and the more that we tell each other about ourselves, the more liknesses we see that we have,” Diaz says in a PSA promoting the event. “Storytelling is age-old, something we’ve done since the beginning of man—it’s how we relate to each other…Because we are a global tribe, that storytelling must expand to be inclusive to everyone.”

Watch the film festival live at PangeaDay.org, and see the public service announcement from Cameron on YouTube!

To help Cameron and the rest of the Diaz-family to cope with the death of her father Emilio earlier this week, they have suggested us all to make donations to the Surfrider Foundation and/or Reef Check in his name. A big thanks to Perez Hilton for the heads up.

CharityFolks.com sent me a message saying that our Cameron has designed a lunchbox for Charity Folks. The money from the auctions at their site which will benefit two hunger-relief organizations – Food Bank For New York City and The Lunchbox Fund of South Africa. Click here to see – and bid – on the exclusive lunchbox Cameron designed.

Also, stay tuned to CameronFan.com for a big surprise to come your way in the coming days…