CBS enjoyed their best Monday night performance for over 20 months, posting their highest audience figures since February 2007. All four Monday night comedies delivered series or season highs last night, against softer competition from a Dancing-less ABC. The Big Bang Theory posted highs in all metrics, beating its record in households, viewers, the 18-34 demo, the 18-49 demo, and the 25-54 demographic. How I Met Your Mother achieved series highs in both adults 18-49 and adults 18-34 and posted its best households performance for over 2 years.

The writers strike, organized by the Writers Guild of America, has officially begun.

Christopher Lloyd, who memorably played Emmett "Doc" Brown in the '80s film series Back to the Future, is set to guest star on The Big Bang Theory next month, according to a report in Variety.

The ninth season of The Big Bang Theory was released on DVD and Blu-ray today in the United Kingdom and Ireland. The three-disc DVD and two-disc Blu-ray sets contain all twenty-four episodes from The Big Bang Theory's latest season along with new bonus features.

Laura Spencer, who plays Raj's girlfriend Emily, has been promoted to a series regular on the show. Last night's episode of The Big Bang Theory was the first to feature her name in the opening credits.