The Mask is the 1994 New Line Cinema adaptation of the Dark Horse Comics title of the same name.
Neurotic, repressed loser Stanley Ipkiss' (Jim Carrey) life changes when he discovers the ancient, wooden mask of Loki, God of Mischief. When Stanley dons the mask he's transformed into a lunatic, shape-shifting, cartoon-character brought to life. He uses his powers to try to rescue his crush, Tina (Cameron Diaz) from her gangster boyfriend (Peter Greene).
Directed by Charles Russell from a script by Mike Werb, the film was a serendipitous combination of the up-and-coming Carrey's manic performance style and the newly emerging technology of CGI effects. Add in the then-unknown Diaz and the film was a massive hit with audiences and even critics.
The Mask spawned a sequel in Son of The Mask and an animated TV series.