Feb. 26--Someone get "The Big Bang Theory" star Johnny Galecki a map of Illinois.
Galecki, who grew up in Oak Park, had difficulty remembering where in Illinois his longtime show "Roseanne" was set during Thursday's episode of "The Talk."
"It was based on Elgin," said Galecki, who was battling former "Roseanne" co-star Sara Gilbert in a "Roseanne" trivia quiz.
"Was it Rockford?," Galecki guessed.
The answer was Lanford, a fictional location. Galecki, 40, answered correctly just before time ran out.
The family sitcom "Roseanne," which starred comedians Roseanne Barr and John Goodman, aired from 1988-97.
"The Big Bang Theory," which celebrated its 200th episode this week, airs 7 p.m. Thursdays on CBS. "The Talk" airs 1 p.m. weekdays on the same network.