Alicia

Alicia is Leonard,Penny's and Sheldon's neighbor above them.She appears in Season 2 Episode 19 The Dead Hooker Juxtaposition when guys(except Sheldon drew all over her).Even Raj consumed alcohol for her.Penny accuse her of using herself in order to slave the guys.The two begin fighting.She was on a audicion for CSI's dead hooker.She accordingly to Howard,got hooked up with one of CSI producents.