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Douglas Harper's Etymology Dictionary
omnium gatherum

1520s, "miscellaneous collection," humorous coinage from Latin omnium "of all" (genitive plural of omnis; see omni-) + Latinized form of English gather.

Wikipedia
Omnium Gatherum

Omnium Gatherum is a six-piece melodic death metal band from Finland, founded in the autumn of 1996. Although the band mainly follows the path of the melodic death metal genre, much of their work shows strong influences from progressive death metal, especially their later albums.

Omnium Gatherum (play)

Omnium Gatherum is a play written in 2003 by Theresa Rebeck and Alexandra Gersten-Vassilaros. It was one of three finalists for the 2004 Pulitzer Prize for Drama.

Omnium Gatherum premiered in March 2003 at the Humana Festival in Louisville, Kentucky.

The play opened Off-Broadway at the Variety Arts Theatre on September 9, 2003 in previews and closed on November 30, 2003. Directed by Will Frears, the cast featured Amir Arison, Jenny Bacon, Phillip Clark (Roger), Melanna Gray (Julia), Edward A. Hajj, Kristine Nielsen (Suzie), Dean Nolen (Terence), and Joseph Lyle Taylor.

The play had its West Coast premiere at ACT Theatre in Seattle, Washington in October 2003.