The 1936-2015 timeline posted at #20 is amazing.

A few errors, like john01992 said, but mostly it's solid.

Georgia Tech joined the ACC in 1978 not 1983. In football, I think they played a partial schedule for 2 or 3 years while their existing contracts were finished.

IMHO, the two things that really kicked off the modern-era of "Realignment" as a constant source of media-speculation were the expansion of the Big Ten to include Penn State, and the exclusive agreement between Notre Dame and NBC to televise all the Irish home games. Taken together, those were revolutionary moves and we are still dealing with the ripple-effects of that today.