Okay, you want movies...here they are, from 1932 and going forward:
Thirteen Women
The Sweetheart of Sigma Chi - 1933
College Scandal
Spring Madness
College Humor
Sorority House
Winter Carnival
Nine Girls
The Sweetheart of Sigma Chi - 1946
Those Were the Days
Take Care of My Little Girl
For Men Only
How to Be Very, Very Popular
Sorority Girl
Ring of Terror
The Girls on the Beach
The Graduate
Three in the Attic
Call Her Mom (TV movie)
Black Christmas
The Hazing
Fraternity Row
The Seniors
The Initiation of Sarah
Animal House
Class of '44
Friendships, Secrets and Lies
The Frat House (XXX)
H.O.T.S.
Midnight Madness
Terror Train
Coed Fever (XXX)
Final Exam
Hell Night
The House on Sorority Row
Revenge of the Nerds (1984)
Source: Robert Egan's From Here to Fraternity, which was published in 1985, so if these movies are too ancient for you to remember, that's why.
Also:
Followers
The Brotherhood (more of an ancient secret society than a GLO)
Hybrid Mode
