Not necessarily when OU is involved...just any interesting memories.
My favorite OU related memory was the 1988 tournament win over Arizona (to get to the title game). Nothing specific, just remember Mookie going crazy after the win.
That was also the year Georgetown almost became the first #1 seed to go down to a #16 seed (pulled out a win over Princeton). That was when G'town was pretty dominate (or at least among the elite), and I remember the Princeton coach looking amazed at the end of the game (with his hair all over the place).
One of my all-time favorite memories (and I can't remember the year) was UCLA's Tyus Edney taking the ball full court, with only a few seconds left, to pull out a last second win over Missouri.