They now have with very different families, friends and lives.
But when Kumar arrives on Harold's doorstep during the holiday season with a mysterious package in hand another adventure is set to begin.
On his arrival Kumar manages to burn down Harold's father-in-law's beloved Christmas tree.
It was scheduled for a 2010 Christmas release.
Six years after Guantanamo Bay, Harold and Kumar have been estranged from one another.
But dates were then pushed back to 2011 Holiday season.
Jon Hurwitz and Hayden Schlossberg have come together again to write the story.
The movie has been directed by Todd Strauss-Schulson.
For this movie Greg Shapiro returned as producer.
Kal Penn left his job with the White House in 2010 to reprise his role as Kumar in this third installment.
However Penn returned to the White House after the movie work wrapped up.
This is the first of the three installments to come in 3D.
All three films, Neil Patrick Harris plays a fictionalised version of himself. He is portrayed as a heavy drug user and womaniser, Much like his 'How I met your Mother' character Barney Stinson.
Harold and Kumar returns again to turn your Christmas in to a laugh riot. The duo come together for their third movie.
Keeping up with the utter madness of 'Harold & Kumar Go to White Castle' and 'Harold & Kumar Escape from Guantanamo Bay' - the duo have returned for 'A Very Harold & Kumar 3D Christmas'.
Harold - JOhn Cho and Kumar - Kal Penn, have made the Harold and Kumar in to one of the most successful franchises in Hollywood.
Even though each of the movies were made after long a long hiatus in each case - it has its own niche audience.
[caption id="attachment_804826"] The movie stars Neil Patrick Harris and Danneel Ackles besides Cho and Penn. [/caption]
It all starts with Kumar inadvertently burning down Harold's father-in-law's prize Christmas tree.
Six years after their Guantanamo Bay adventure, stoner buds Harold Lee and Kumar Patel cause complete holiday chaos.
To fix it, Harold and Kumar embark on a mission through New York City to find the perfect Christmas tree.
And as always - they get in to trouble on every turn.
'A Very Harold and Kumar 3D Christmas' was announced on May 7, 2009.