PENNY HELPS SHELDON FIGURE OUT HIS NEXT MOVE IN SCIENCE, ON "THE BIG BANG THEORY," THURSDAY, JAN. 11
Laurie Metcalf Returns as Sheldon's Mother, Mary
"The Solo Oscillation" - When Sheldon kicks Amy out to work solo, she and Leonard bond during a series of science experiments. Also, Bert the geologist replaces Wolowitz in the band Footprints on the Moon, and Sheldon finds Penny a surprising source of scientific inspiration, on THE BIG BANG THEORY, Thursday, Jan. 11 (8:00-8:31 PM, ET/PT) on the CBS Television Network. Laurie Metcalf returns as Sheldon's mother, Mary.
STORY BY: Chuck Lorre & Steve Holland & Anthony Del Broccolo
TELEPLAY BY: Eric Kaplan & Maria Ferrari & Jeremy Howe
DIRECTED BY: Mark Cendrowski