Jean Singer is an American actress, best known for her role as Oliver in the television series 'The Wonder Years'. She has also appeared in other television shows such as 'Friends' and 'The Big Bang Theory'. Jean Singer has also had a successful career in film, appearing in movies such as 'The Hangover' and 'The Proposal'. She is an accomplished singer, having released several albums and singles. Jean Singer is a multi-talented performer who has made a lasting impression on the entertainment industry.