STFUandPlay's Brian Munjoma writes
"Kaiju, when translated directly to English from Japanese, literary means ‘strange beast’ however it has been defined to mean ‘monster’ or ‘giant monster’. Kaiju movies refer to movies where a Kaiju attacks a major Japanese City or engages other (or even multiple) Kaiju in battle. The most famous Kaijus include Godzilla, Mothra, Gamera and even King Kong. When I heard that a new Kaiju movie was coming out that had humans in giant mechs fighting Kaiju, I instantly put Pacific Rim on my list of movies to watch on the day of release."