I started well solving first ones straightaway including 10,24, though I was still not sure what the theme was.  There was only one word I could get that fits 8ac, but that hasn't been much help as I'm not really familiar with this US cartoon series.  I've googled a bit, but still can't find the name of the dance in 27ac referred to by someone above.
I've been laid low with a bad cold and the brain isn't ticking over so please can I have a hint for 13d and for 14d.  Is Legion another American series?  I've never seen it.  Do I need the name of the Grand Inquisitor in 9ac - there were a lot of them in the Spanish Inquisition.
What do you mean by GK?  Is it General knowledge?
I'm off with my strepsils to try a few more.