Benedict Cumberbatch videos: 'Sherlock' star as Chewbacca, Alan Rickman, David Tennant and more

Benedict Cumberbatch is incredible in "Sherlock," but did you know that the actor also does impressions? In order to understand just how incredible this really is, enjoy videos in which Cumberbatch imitates Chewbacca, Alan Rickman and more.

An "Alan Rickman-off" with Jimmy Fallon



Obi-Wan Kenobi (while driving on "Top Gear" -- look for the impression at 4:30)



Chewbacca (with Harrison Ford listening)



Former "Doctor Who" star David Tennant


Photo/Video credit: Getty Images, YouTube