Time travel and reversing losses are hard, as some of them set up other seasons/wins, but as you will see below this is probably too much, and will bring up bad memories, but every time THESE games are mentioned, I die a little inside.
1984 Orange Bowl vs. Miami (National Title. I wasn't alive, but I get a little teary eyed when watching it on TV.)
1994 Orange Bowl vs. Florida State (National Title. First I can remember, if we win, who knows how many titles in a row we could have won. It would have been at least 3 in a row, obviously.)
1996 Big XII Title game vs. Texas (The first ever Big XII title game, and the team was flu ridden I believe?)
1998 vs. Texas. (I was there when the streak stopped, horrible feeling. Could have won the National Title as well that year)
1999 @ Texas. (If we win, we should have won the National Title)
2001 @ Colorado. (Just got outplayed, no excuses, that hurt considering we beat Oklahoma earlier in the year.)
...then we somehow slip into the title game...
2002 Rose Bowl vs Miami. (National Title. We we're just out played, not enough talent, but a title in the 2000's would have been nice)
2002 vs. Texas (For a struggling team, that was a great time to turn it around, and it just didn't happen)
2005 vs. Texas Tech (I couldn't decide to laugh or cry at this one)
2006 vs. Texas (Good offensive call, better defensive play, I was bitter but thought we had turned the corner with Callahan)
2008 @ Texas Tech (Against Tech's best team who went to #3 in the nation and we get it to overtime and lost)
2009 @ Virginia Tech ("Nebraska can't win the big game on the road" I got so sick of that and thought,"THIS, THIS is the ONE!" I thought there would be no worse Husker loss ever...boy was I wrong)
2009 vs. Texas Tech (I wanted revenge so bad on these guys, but injuries on the offense seemed to hold us back, well at least I hope that was the case, as we couldn't sustain a drive, and we lost the momentum in the first quarter)
2009 vs. Iowa State (Attended, and it was a fluke game for the century)
2009 Big XII Title Game vs. Texas (Attended and that was just evil. Pure, freaking, evil. It couldn't have got any worse after the Virginia Tech game, but nope, it had to be topped out by this game sadly. Let's hope this is the last of "evil ending games" against us, and especially against Texas of all teams. All of the Texas fans down there still all acted like they "won by 45" and as if it was a "piece of cake".
Minus the National Title games...I'd say 2009 Virginia Tech/Texas games, followed by the one losses that we were away from an undefeated season/potential National Champions.
Texas appears A LOT in this post, and they have a series lead, but every game besides the 2003 game has been a classic, just sadly more in their favor. Hoping we turn the tide against them starting in 2010!
Texas Tech is also a thorn in our side, I'm sick of seeing them beat us too!
This was so hard to decide, considering how many times we could have won National Titles or been undefeated, but some of those losses "had to happen" to make the team better. Or at least in some cases.