Something involving Buffy and Giles from BtVS.  She seemed to switch to a different 'place' / dimension / frequency, etc. in order to truly take a break from her ongoing travails. There, though, she could relax (a bit), and Giles, who was there, turned into his very much longer self (child-age) and was starting a song, I think (yeah, a bit Musical-like). Observing this, I was bemused by the idea that the young Tony Head had curly hair (i.e., the 'casting' of the child actor playing his young self)...