Whedonverse

"He [Joss Whedon] is the gravitational center of the Whedonverse, a galaxy that spins recurring actors and themes through an orbital system of TV shows, films and comic books that all share similar traits: a unique brand of witty dialogue, relatable characters and fantasy/sci-fi mythology. Together, the works inspire the kind of obsessive devotion generally reserved for those inhabiting Middle Earth or a galaxy far, far away."

- Entertainment Weekly

The Whedonverse, sometimes referred to as the Jossverse, is the loosely-defined fictional universe encompassing the worlds and storylines from projects developed by Joss Whedon.

Television series

 * Buffy the Vampire Slayer (1997–2003)
 * Angel (1999–2004)
 * Firefly (2002–2003)
 * Dollhouse (2009-2010)
 * ''Agents of S.H.I.E.L.D. (2013–)

Films

 * Serenity (2005)
 * The Cabin in the Woods (2012)
 * The Avengers (2012)
 * Much Ado About Nothing (2012)
 * Avengers: Age of Ultron (2015)

Web series

 * Dr. Horrible's Sing-Along Blog (2008)

Frequent casting
Joss Whedon is known to often hire the same actors for his projects. Amy Acker and Alexis Denisof have both starred in five Whedon projects. As of 2017, this is the most any actor has starred in. The main cast of Much Ado About Nothing is comprised of alumni from other Whedon projects.