It's easy to cosplay as Mario. Put on a fake moustache and some overalls. It's hard, very hard, to cosplay as Mario and do it well.
Today, though, we're seeing the best damn Mario cosplay I've ever seen. And one of the best Lara Croft cosplays I've ever seen. Which would have been enough for a great week as it is, but then someone else went and dressed up like Resident Evil 4's merchant, so now it's even greater.