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'Welcome to the Jungle" is the season 4 premiere of the dramedy television series Entourage.
Plot
Shortly after the events of last season, Vince and the entourage travel to Colombia to begin production on their film Medellin which is now under Billy Walsh's control. While on set, a filmmaker makes a documentary revolving the events of the production and filming stages of the film. Walsh immediately clashes with producer Eric and demands more than is expected, including more extras in a pivotal scene and the collaboration of Academy Award winning writer Stephen Gaghan. Walsh also investigates who is sleeping with the lead young actress who rejected him and threatens to shut down production. Throughout the production, Billy shows signs of incredible stress. Three days prior to shooting, Billy states that the ending needed to be changed and that he would write it. However, he continues to procrastinate and then demands that Eric get Stephen Gaghan to fix it. After a pep talk from Eric, Billy snaps out of his funk and prepares to complete the film with renewed optimism. While preparing notes for Gaghan, Billy proceeds to re-write the movie himself and sends Gaghan home with a check for $275,000.00 for just reading the revised script. Drama also seeks a part in the film and receives a small bit towards the end. The episode ends with the cast and crew successfully filming the critical action sequence of the movie on the last day of production.
Trivia
The title of the episode refers to Welcome to the Jungle, the breakthrough single of Guns N' Roses, which was released in 1987. The 2003 film, The Rundown was also titled Welcome to the Jungle in some territories outside America.
This is the first episode in the history of the series to have a cold opening.
Whilst she doesn't appear this episode, it is the first episode that Perry Reeves (Mrs. Ari) appears in the opening credits. Debi Mazar no longer appears in the opening credits, having appeared only a handful of times since season 2.