There are few things network execs enjoy more than crossover episodes, especially now that franchises like Law & Order and One Chicago have taken over broadcast TV. Just this past TV season, ABC saw a ...

Marvel Comics was built on crossovers. While earlier publishers had their characters team-up, The House of Ideas went a step further in building their universe. By placing most of their characters in ...

Whereas some crossovers come off as blatant ratings grabs — and some seem slipshod in their execution — the following exemplars excelled through their ambition, humor, or narrative significance. Some ...