My Jenny headcanon is that she really likes those Dance Dance arcade games. She and Buffy really like playing them together but they both especially like watching Giles try his best to play it too.
omg thinking about it….jenny is such a good dancer. like the first time she and giles danced together she started moving and giles was so busy watching her that he nearly danced straight into the buffet table.
but jenny is also fiercely competitive & “yeah whatever you’re the slayer but i’m still a better dancer than you” & it makes buffy determined to Destroy Her. giles goes and gets some bad arcade food and watches them play until jenny drags him over to play too and then it turns out he’s got moves