I have no idea whether My Chemical Romance are any good or not, but - poor souls - they always turn up in the sort of Harry Potter fic where Harry, Draco, or sometimes Hermione (never Ron, oddly enough) has turned into a whiny emo goth (admittedly Draco's part of the way there anyway) who lurks in his or her dormitory, cutting, and listening to said anachroistic music on said anachronistic gadgets.

I think Bunter might have a Jeeves moment, in those unlikely circumstances.