The most famous hacks have been the weather balloon saying "MIT", which popped up out of the ground on the 50 yard line at the Harvard/Yale football game, and The Great Dome Police Car Hack, where the body shell of a campus-police car mysteriously appeared on the top of the almost inaccessible Great Dome one morning, complete with a dummy cop and a dozen donuts. The Dome served as a range for life-sized model cows, borrowed from the Hilltop Steak House in Saugus, MA, in the 70s. The Great Dome was also "dressed" as R2-D2 to celebrate the release of Star Wars Episode I. In 2001, to celebrate the release of the first Lord of the Rings film, a yellow banner complete with Elvish script, representing the inscription on the "one ring," was found surrounding the Dome on the morning of the opening. More recently, the MIT Dome was the site of another famous hack—when a replica of the 1903 Wright Brothers' Plane appeared there, celebrating 100 years since the Brothers' famous flight.
One hack involved a police car with its warning lights running. The unusual aspect of this hack was its position—on top of MIT's Great Dome. The car was found to be a gutted, junked, heavy Chevrolet, painted meticulously to match the MIT Campus Police patrol cars. The car's number was pi. Its license plate read "IHTFP", the acronym for MIT's unofficial slogan. A dummy dressed as a campus patrolman was seated inside with his box of donuts.
Due to MIT's proximity to Harvard, many hacks involve the annual Harvard-Yale football game. Because of the Cambridge rivalry between MIT and Harvard, hackers often are found at the games and have come up with some of the most famous hacks in the Institute's history.
One notable hack attempt targeting the 1948 Harvard-Yale football game involved the use of primer cord. One night shortly before the game MIT students snuck into the Harvard stadium and buried primer cord just under the field. The plan was to burn the letters MIT into the middle of the field during the game. However, their work was uncovered by groundskeepers and disabled. During the game the hackers were apprehended while wearing heavy coats on a fair-weather day. The coats were lined with batteries, obviously intended to be used to detonate the primer cord. An apocryphal story is that an MIT dean came to their defense, opening his own battery-lined coat and claiming that "all Tech men carry batteries"; an MIT dean did show up, but he was not wearing batteries. This phrase has since become common among MIT students.
The Harvard-Yale football game was again the target of MIT hacks in 1982 when a weather balloon painted with "MIT" all around it was inflated seemingly from nowhere in the middle of the field. In 1990 an MIT banner was successfully launched from an end zone using a model rocket engine shortly before Yale attempted a field goal kick. The next day the Boston Herald ran the headline "MIT 1--Harvard-Yale 0: Tech Pranksters Steal the Show."
The cleverness of many MIT hacks has even resulted in urban legends about supposed hacks. One rumored hack involved a certain student's adherence to classical conditioning behavior response. Throughout the off-season this supposed student visited the Harvard football stadium during his lunch break. He dressed in a black and white striped shirt and trousers, filled his pockets with bird-seed, then went on the field, blew a whistle, and spread his birdseed on the field. The result of all of this effort, the story goes, is that on opening day as the Harvard football team took the field to face their opponent, the referee blew his whistle to signal the start of the game, and the field was suddenly inundated by a flock of birds looking for their lunch. Despite sounding like a classic MIT hack, this particular prank has never been verified. The author of a 1990 book about pranks pulled by MIT students stated that he had not come across this tale during his years of research.
MIT retaliated in April 2006, when students posing as the Howe & Ser Moving Company stole the 130 year old, 1.7 ton Fleming House cannon and moved it to their campus in Cambridge, Massachusetts, repeating a similar prank performed by Harvey Mudd College in 1986. It should be noted that the name "Howe & Ser", if said rapidly, and if read recognizing that the & symbol is a ligature of the Latin word "et", sounds like howitzer; it could also mean "how we answer", since the latest prank was an answer to the 2005 prank on MIT. To add to that, a replica of the famed "brass rat" (MIT's graduation ring) was machined to fit onto the cannon which was also cleverly pointed towards Caltech. Thirty members of Fleming House traveled to MIT and reclaimed their cannon on April 10, 2006. They were greeted by a group of MIT students, offering them a farewell party.
During MIT's Campus Preview Weekend in 2007, Caltech distributed a complete fake edition of "The Tech" with the headline article reading "MIT invents the Interweb". This edition included a mock weather forecast, often referring to how sunny Pasadena (where Caltech is located) is compared to Boston, as well as other tongue-in-cheek articles.
In 2008, Caltech students provided a "Puzzle Zero" in MIT's "mystery hunt" which when solved, told solvers to "CALL 1-626-848-3780 ASAP." When MIT students dialed the number, they heard, "Thank you for calling the Caltech Admissions Office. If you are another MIT student wishing to transfer to Caltech, please download our transfer application form from www.caltech.edu. If you are an MIT student not wishing to transfer to Caltech, we wish you the best of luck, and hope you find happiness someday....
A common motif in the MIT Brass Rat is the inclusion of the letters IHTFP hidden somewhere in the bezel.
November 2006: MIT Hackers put a huge Triforce on the Great Dome. It was in commemoration of the release of the video game The Legend of Zelda: Twilight Princess. September 2006: In Mid-September, part of the side of Simmons Hall was turned into a giant blue LED display11 September 2006: An "MIT Fire Department" fire truck was placed on the Great Dome, presumably to commemorate the fifth anniversary of the September 11, 2001 attacks. August 2006: A welcome back poster and a few dozen rubber ducks in the name of Simmons Hall at MIT appeared on the Caltech campus in mid-August. They were accompanied by posters that presented proposed renovations to add Simmons-like architectural elements (particularly the ones often regarded as useless by MIT students) to Caltech dormitories, which were undergoing renovation.06 April 2006: A 130 year-old, 3+ ton cannon was moved from California Institute of Technology to MIT via a fake moving company "Howe & Ser Moving Co." This marked the 20th anniversary when 11 students from Harvey Mudd College removed the cannon from the front of the Fleming House. The cannon was situated in a prominent place on campus and was adorned with a unique Brass Rat. It was symbolically pointed at its previous owner, Caltech. Thirty members of Fleming House traveled to MIT and reclaimed their cannon on April 10, 2006. They left a toy cannon with the note, "Here's something more your size." 28 February 2006: Giant Model Torino 2006 Olympics Medal on the Great Dome.