I rather like Greek for having a dual form as well as a singular and plural form. (Translators made me add dual-form messages as well as singular and plural form messages).
Slovenian has four plural forms and Arabic has _six_. Here's a nice list with details and rules: https://www.gnu.org/software/gettext/manual/html_node/Plural...
Slovenian has four plural forms and Arabic has _six_. Here's a nice list with details and rules: https://www.gnu.org/software/gettext/manual/html_node/Plural...