Nathan Fillion is 'Super': Hey, you don't need to tell us!

Here at EW we can’t get enough of Nathan Fillion, star of Castle, and one of the nicest people ever to pop into our offices to just say hi (well, okay, to just say hi and pimp his show). Another big Fillion fan is writer-director James Gunn who cast the actor in his wildly underappreciated gorefest Slither and in the fantastic debut edition of his NSFW web series PG Porn (see video after the jump).

It now turns out that Gunn has recruited Fillion for his new movie, Super, a comedic take on the superhero film. The actor joins Rainn Wilson, Ellen Page, Liv Tyler, and Kevin Bacon. In addition, Gunn has cast Linda Cardellini, star of the also wildly underappreciated Grandma’s Boy (her character’s drunken, lewd, rendition of “Push It” is one of the marvels of the modern age — or the age of great dumb comedies anyhoo).

Any other big fans of Slither—or Grandma’s Boy—out there? And is there anyone who has had their, uh, fill of Fillion (surely not!).