The open architecture of Mather's common spaces makes it easy to host social events. Mather's Housing Committee hosts happy hours every two weeks. In addition, the House hosts formal dances twice a year, as well as student-faculty dinners once a semester. Most prominent among Mather social gatherings is the Mather Lather, a College-wide foam party that takes place every spring in the dining hall. Since its first run in 2003, the Lather has grown in scope and fame, earning the attention of the Boston media and
The New York Times. The Louie Cup is a year-long
Olympics-like tournament of games that takes place in the House. Generally, an event is held every week in which one or more representatives of each team (comprising a group of 4-6, usually roommates) competes. The games include a pancake-eating contest, foosball, a dining hall version of
Iron Chef, and hot pepper-eating, as well as a wiffle ball home run derby, ping pong, Wii sports, dodgeball, and boggle. The events are open to the campus but tend to take place in Mather. The tournament is named after Louie's Superette, a convenience store across the street from Mather House, and a large quantity of alcohol is awarded to the winning team at the end of the spring semester. The house's well-known rivalry with Kirkland House has sparked heated exchanges of practical jokes and pranks. While Mather is generally seen as the instigator and aggressor, the rivalry began when a number of Mather students transferred to
Kirkland House. Mather won the Harvard Green Campus Initiative Green Cup in 2006 and 2011 and the Greenest HoCo award in 2008. Mather House has recently won the Straus Cup in both the 2018-19 and 2019-20 academic years, Harvard's intramural sports championship prize. ==Notable alumni==