A few things come to mind from my first time at uni, that just won't fade:
Evening study sessions with course buddies that eventually turned into gaming sessions when we ran out of brain power.
Cricket (tennis ball) in the halls when the resident tutor/PhD student was away.
That week during Freshers were nearly nobody knows anyone and everyone seems to be equal and just looking to make friends.
The international student getting too drunk and running around the halls with a plastic sword.