If there's one thing Harry Potter fans love, it's pretty much anything related to the series. Seriously, if I just tell someone to turn to page 394 and they're a fan, they'll go ballistic.
It's a huge reason why I've become a fan of the entire Harry Potter world in recent years. Yes, my wife shone me on to it (but I'd vehemently hated many things she's tried to get me to like, just ask her) but the enthusiasm fans have for J.K. Rowling's wizarding world is infectious and I can't help but love it now, too.
So whenever I see Potter-themed stuff, I get pretty darn excited. Like the news that Yuengling's is releasing tubs of Butterbeer flavored ice cream.