<em>The Big Bang Theory</em> The Big Bang Theory

The Big Bang Theory will deliver quite the, uh, bang for its 200th episode later this month, when Adam West -- the original TV Batman -- arrives in Pasadena. It's superhero tights versus Star Trekwonder kid as Sheldon's (Jim Parsons) arch nemesis Wil Wheaton is also scheduled to return in the star-studded episode.

The Big Bang Theory boss: "Maybe season 10 is the ending point"

Additional recurring characters Dr. Beverly Hofstadter (Christine Baranski) and Leslie Winkle (Sara Gilbert) and Barry Kripke (John Ross Bowie) will also join although CBS is mum now on more details about the storyline. Stay tuned for more!

The 200th episode of The Big Bang Theory airs Thursday, Feb 25 at 8 p.m. on CBS.

Check out this clip from the highly anticipated Meemaw Materialization !