There's always a few games every year that scare me. Games that, if I still printed things out, would highlight with a sense of doom. If psychoanalysts structured studies around college football, the games that scare us define us much more than the games that don't.
In their first two match-ups as conference foes; TCU and Texas Tech made things as gut-wrenching, thrilling - and if you were wearing purple in 2013 and 2014 - as heartbreaking as possible. 2015 was heartbreaking if you were Texas Tech, but in a different way. I'd rather have 82 tacked on me all day over the way TCU lost in 2012, and more so in 2013.