But it was also a huge loss to fans of great acting!
However, just because the Brit is gone, doesn't mean we've seen the last of him! The prolific Harry Potter star still has two more movies that he made that have yet to be released — Eye in the Sky and Alice Through the Looking Glass!
As you might know, Through the Looking Glass is a followup to Tim Burton's hit movie Alice in Wonderland where Alan voiced the blue caterpillar. In the trailer (below), his magical voice is the first thing you hear.
Ch-ch-check out the first trailer for the Disney sequel (below)!