Harrison Ford surprised die-hard Star Wars fans when he casually turned up during a Skype meeting about the Force for Change fundraising program.

This video is the latest in the Star Wars fundraising collaboration with Omaze, which raises money for charities selected by stars and filmmakers.

Harrison Ford and Omaze joined forces for the video to offer tickets to the upcoming premiere of Star Wars: The Force Awakens. Anyone donating $10 or more to the campaign will be entered into a raffle where two winners will receive four tickets each to the premiere.

The Force for Change program already raised $4.26 million for UNICEF Innovation Labs and programs during the movie’s production.

The people chosen for the video were people who had already donated to the cause, and thought they were just being thanked by organisers – until Harrison Ford walks on in!

Check out the reactions in the hilarious video!