Robert Downey Jr. had so much fun last year hanging out with contest-winning fans—while at the same time generating a cool two million dollars for a children's hospice—that he just launched a vehicle to do it full time.

"I thought, ‘Wow, I really need to educate myself and get more involved in this sort of stuff, and give back, because I've been so fortunate."

He decided he might call it the RAF–not Royal Air Force, but a charity-boosting foundation called Random Act Funding. He said he ran it by "the Mrs." and his wife thought it was a great idea.

He spoke to fans in his first Facebook Live session from London, answering questions, and kindling support for the fundraiser.

For as little as $10 you are entered into a lottery contest for the chance to spend the day with RDJ on May 5 and attend a private screening of his latest film from the Marvel Universe, Captain America: Civil War– the day before it opens. Omaze.com, which raises the funds through their website and provides logistical support, will fly you and a guest to New York City to hang out with the superstar.

The campaign has already reached $800,000, but Downey Jr. says if it generates one million dollars by tomorrow, he will add a couple more winners to the party… "and possibly throw in a hand-curated goodie bag".

This first effort for RAF will benefit The Anti-Recidivism Coalition, which he called, "very close to my heart", the Make-a-Wish foundation which is "super-important" to him, and the Motion Picture and Television Fund, which provides health care, financial support for fellow industry members in times of need.

The actor is also considering a collaboration with his supporters to allow them a chance to decide in the future "where some of the dough will go"–and he's not talking pizza.

Oh, and by the way, he said he was hoping to team up with Guy Ritchie to do another Sherlock movie, a prospect every RDJ fan has been dreaming of for years.

Enter to win and see his video at Omaze.com/RDJ. Are You Loving RDJ? SHARE the Cool News…