* AcclaimedFlop: Failed to make its budget back, yet gained a 70% in Website/RottenTomatoes, a stunning rating for this kind of flick.
* ActorAllusion:
** When asked by one of his henchmen if Beck and Travis are dead, [[Creator/ChristopherWalken Hatcher]] retorts, "[[Film/TheDeadZone What am I, psychic?]]"
** Just before the opening BarBrawl, Beck ''literally'' bumps into Creator/ArnoldSchwarzenegger in his [[Film/TheExpendables (not-so-)]] last film appearance; Ahnuld smirks at him and says, "Have fun!", meta-PassingTheTorch to Dwayne as the leading action star in Hollywood.
** ''During'' said BarBrawl, Beck performs [[Wrestling/DwayneJohnson The Rock's]] signature finisher, the Rock Bottom, on a mook.
** "[[Film/Evolution2001 Ca-caw! Ca-caw!]]"
** One of Wrestling/DwayneJohnson's most famous catchphrases is to ask if you can smell what the Rock is cooking. Here, he plays an aspiring chef.
* CaliforniaDoubling: The crew wanted to film in Brazil... and had their stuff stolen by natives, leading to filming in Hawaii. Though they try to be convincing, starting with crates and ads of local beer and shields of local soccer teams.
* MarketBasedTitle: The film became ''Welcome to the Jungle'' in most other regions, except in Spanish-speaking countries, where it was retitled ''The Amazonas Treasure'' instead.
* WhatCouldHaveBeen:
** That "Tooth Fairy" speech? It was supposed to be a ''Franchise/WinnieThePooh'' speech. "I WANT THAT BEAR'S ASS OUTTA MY WINDOW!!!"
** Also, a narrowly avoided WhatCouldHaveBeen in the "Oompa-Loompa" line. Walken originally refused to say it... because he hadn't read/seen ''Literature/CharlieAndTheChocolateFactory'', and did not grasp the concept of the Oompa-Loompa.
* WorkingTitle: ''Helldorado'', which still appears in a vandalized sign.
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