I imagine it's probably redundant at this point, but you can never say Excelsior enough times!
As much as I prefer DC over Marvel, there is absolutely no way that I can deny that without the Fantastic Four, and all the other wonderful characters he helped create, superhero comics as we know them today and all their wonderful or not-so-wonderful spinoffs would simply not exist.
God bless you, Stan Lee. I hope you, Bob Ross, Steve Ditko, who also passed earlier this year - a man of mighty Slovak heritage, good on ya mate and even Stefan Karl are making just a few more masterpieces up there.
And of course, one more time for the True Believers: Excelsior.