* EditedForSyndication: Along with GMK, Sony/Tristar created a 90 minute version of the film for airing on the {{Creator/SciFiChannel}} and some on-demand services. As one may guess, many subplots were trimmed or spliced out for time, but Tristar also felt the need to censor some of Kudo's dialogue, resulting in [[http://www.dailymotion.com/video/xvqkma_bodybuilding-huh-godzilla-vs-megaguirus_shortfilms this gem]].
* HeyItsThatGuy: Yuriko Hoshi, who played photographer Junko in ''Film/MothraVsGodzilla'' and reporter Naoko in ''Film/GhidorahTheThreeHeadedMonster'' plays the Professor Yoshino Yoshizawa.
* In the international print of the film used for Sony's transfers, the contrast is untimed, making the wires suspending the Megaguirus prop suddenly visible. This SpecialEffectsFailure is not present in Japanese versions of the film.
* WhatCouldHaveBeen: Originally Sony had licensed this film with the hope of giving it a theatrical release in the United States.
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