For me:
2003 DP - I remember my mom leaving to go to the store right after OU scored, and she said nonchalantly "they'll never score again" and she was right
It was such a fun game to watch and see it go so wrong for OU after the very rough start.
2007/8 beating ku- the dunk by Walker was so loud, and it was so great to finally get that win
2000 Nubbs - Coldest I have ever felt, and being in the snow, it was a ton of fun
2010 S16 - Just an insane game, back and forth, big shot after big shot from both sides, amazing
2011 in general - Every game was insane, Miami, Baylor, A&M, and even the loss to OSU is still my favorite game we lost, when I think back on the OSU game I feel the same as the Sweet 16 game vs Xavier except with the sting of the loss, but the big play after big play, shootout game was such a rush
2012 Texas - Best way to celebrate a birthday
2014 Wild Card - Easily the best baseball game I've seen, just incredible
2015 WS - Especially Hosmer's run to home, just a ballsy play
HM for the lolz:
2015 and 2017 ISU. 2015 for the most lollerz self destruction of a team in 1:34 (or w/e it was). Just so crazy, I remember after the failed 4th and 19th walking up the steps to leave with my friend, and then we hear "K-STATE FOOTBALL!" and we were both like "no way" and sure enough, the dumbness ensued, so funny.
2017 because it was just,. like, inevitable we were going to win that game. You could feel it, you knew we were going to score that game winning TD as time expired to rip their hearts out again and we did. It was so, so delicious