Gone Nutty is a 2002 computer-animated short film for Blue Sky Studios directed by Carlos Saldanha. It is about Scrat, the acorn-obsessed squirrel from the Ice Age movies, as he tries to secure his next acorn stash while avoiding danger.
The Gone Nutty title on the poster uses a comic font named Fink Sans from House Industries. Fink Sans is part of the hand-lettered RatFink font family. You can view more details about the font family here.