then there was Brian Kinney, of course (though damn, did he not age well, which I already realized in Hellcats).
Really? I didn't think he aged too badly (and I was totally drawn into the show by the promise of Brian Kinney and John Connor on the same show. :P)

So...young witches and wizards
Actually, they're all witches. No wizards mentioned. :)

Brian killed Cassie's mom (maybe that was her name in Life Unexpected? :)
You got it! She was Cassie on SC. :D

Rumplstilkin rocks
Yes. Rumpelstiltskin and Belle.