The show is centered on five characters: roommates Leonard Hofstadter and Sheldon Cooper, two physicists employed at the California Institute of Technology (Caltech); Penny, [url=http://soundcloud.com/vds4/how-i-met-your-mother-season-8-episode-6-online-free-streaming-enjoy]How I Met Your Mother Season 8 Episode 6[/url] a waitress and aspiring actress who lives across the hall; and Leonard and [url=http://kidblog.org/ChotaDexter/eef1fff1-ec2e-4c49-8901-1e645d3f7896/the-walking-dead-season-3-episode-5-3x5-stream-high-quality-series/]Walking Dead Season 3 Episode 5[/url] Sheldon’s equally geeky and socially awkward friends [url=http://soundcloud.com/vds4/gossip-girl-season-6-episode-5-online-on-putlocker-full-episodes-free-enjoy]Gossip Girl Season 6 Episode 5[/url] and co-workers, aerospace engineer Howard Wolowitz and astrophysicist Rajesh Koothrappali. [url=http://soundcloud.com/vds4/90210-season-5-episode-5-s05e05-novamov-megavideo-videobb]90210 Season 5 Episode 5[/url] The geekiness and intellect of the four guys is contrasted for comic effect with Penny’s social skills [url=http://soundcloud.com/vds4/sons-of-anarchy-season-5-episode-10-online-free-streaming-on-fx-live]Sons of Anarchy Season 5 Episode 10[/url] and common sense. Over time supporting characters have been promoted to starring roles: Leslie Winkle, a physicist colleague at Caltech and, [url=http://soundcloud.com/vds4/new-girl-season-2-episode-7-online-free-streaming-on-google-tv]New Girl Season 2 Episode 7[/url] at different times, a lover of both Leonard and Howard.