These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Genius Bonus: As with Ultimate Sleepwalker, this series has a number of references on everything from a variety of rock bands to the fashion industry to the works of William Shakespeare. Most of these are only referred to in passing, coming from the author's insane memory for trivia and serving mostly to reinforce characterization, rather than developing the plot.
Germans Love David Hasselhoff: Aside from the expected American and Canadian fandom, readers from Denmark to Brazil to Trinidad & Tobago have all checked the series out at one time or another.
Growing the Beard: As with Ultimate Sleepwalker, it took a bit of time for this series to really come together. Once again, I think the first Annual was when it really started to pick up, particularly as Mary Jane actively begins trying to improve her often combative demeanor.