When Zack meets the little Cloud from this timeline:
Zack:' More importantly Cloud, did you shrink?
Mini!Cloud: How do you know my name?
Zack: You're kidding. It is you? Did someone cast Mini? And then Confuse? Was it a marlboro? Those things are vicious.
In the penultimate chapter, Cloud and Sephiroth fight again, this time because of JENOVA's influence. Genesis brings an end to it by throwing Firagas at JENOVA. Repeatedly. Also, counts as his Moment of Awesome.
Genesis: "Honestly. I'm not sure what I missed, but it wasn't even a moving target."
Cloud gets his PHs and learns that "Treasure Princess" (Yuffie) has been sending increasingly ridiculous texts for help. He takes a look, and immediately leaves to go rescue her.
Crossovers and Omakes
The author later wrote a bonus story based off the epilogue.
This little tidbit on the crossover between TFA and The Fallacious Goddess.
Zack: "Wow Sephiroth, youre a dick in all dimensions, arent you?"
Sephiroth: Except this one, apparently."
Also from the same fic, the running gag of everyone who sees both Clouds asking the one from TFA.