At the time,screenwriter Paul Haggis intended to helm movie himself with Vince Vaughn and Jack Nicholson in the leads.
The screenplay for this film was featured in the 2005 Blacklist; a list of the "most liked" unmade scripts of the year.
Honeymoon With Harry is a project that's been kicking around Hollywood for awhile, and is thought to be one of the better unproduced screenplays out there.