Dragon Ball Z, Vol. 24: Hercule to the Rescue (Dragon Ball Z, #24) | 
pick9/10:
“You are truly remarkable. Do you know that?” - Piccolo to Goku
Watching Piccolo train Goten and Trunks in the ways of fusion was super cool and I love the final product we see in Gotenks.
I also love how much purity we see in Buu as it‘s drawn out by Hercule. The fact that he was created my monsters truly shaped what he had become, not what he wanted to be.