We reported a few days ago that Sara Gilbert ("Roseanne"), who guest starred in a few episodes of the first season as Leslie Winkle, will be joining the show. Well CBS has officially announced this, you can read their press release below:
"Sara Gilbert has joined the cast of THE BIG BANG THEORY as a series regular, reprising her role as 'Leslie Winkle', Leonard's (Johnny Galecki) colleague and on-again-off-again love interest. The second season of THE BIG BANG THEORY premieres Monday, Sept. 22 (8:00-8:30 PM, ET/PT) on the CBS Television Network.
Gilbert is well known to television audiences for her Emmy-nominated role on 'Rosanne', in which Galecki played her love interest. She recently made guest appearances on "ER" and 'Private Practice'. ".
| Title | Date Posted | Category |
| Sara Gilbert joins show as a regular | 9th August 2008 | Show |
| Gilbert & Galecki to reunite | 4th September 2007 | Show |
| Episode 3, Sara Gilbert stars | 20th September 2007 | Show |
| CBS announces Episode 2.01 | 21st August 2008 | Show |
| Amazon posts Season 2 pre-order info | 18th April 2009 | Show |