There's also the time he talked about a tortoise munching on a strawberry.
Rickman, with his monotone, telling voice, narrated this video - released just last month - to help raise money for charities Save the Children and the Refugee Council.
A caption on the video reads:
By watching this, you have donated to Save the Children and Refugee Council. YouTube gives advertising revenue to whoever uploads a video. The more views on the video, the more money we receive. We will pass all that money on to charities (LINKS BELOW). Share this video to make an impact. With thanks to Alan Rickman.