June 15th marks a new holiday for the internet: Cheer Up Keanu Day. Thousands of people on the web have mounted a heartwarming effort to bolster the spirits of actor Keanu Reeves, who became a meme this month when he was spotted forlornly eating a sandwich alone on a bench. They're not just doing nice things for Keanu, though, they're also donating to charities and volunteering on his behalf. It totally makes sense, because Reeves is quite the philanthropist himself, reportedly donating a large percentage of his earnings to charities and to the crews of the films he works on.

Now Keanu has gone from a running joke to an icon of "talent and humility." Even the notoriously harsh trolls over at 4Chan love Keanu: they started all this with a list of true "Keanu Facts" that give us even more reason to believe Keanu might be the most kindhearted dude in Hollywood.

The two main ways to participate in Cheer Up Keanu Day are to send the actor a nice note or a package (his fanmail address is listed on the Cheer Up Keanu Day Facebook page) or to donate to cancer research. Keanu's fans figure that gift will have special signifance to him, because his sister Kim was diagnosed with leukemia. If you can't send mail and don't have any money to donate, you can still post your message of love from the internet to Keanu at ThankYouKeanu.com.

Cheer Up Keanu Day is now so big that it has 14,000 attendees on Facebook, and mainstream press coverage in Time and USA Today. Nobody has gotten a reaction from Keanu himself, though. Was he really sad, or just pensively enjoying a sandwich? Either way, we can only imagine that he's smiling today at the thought of so many people being excellent to one another on his behalf.