Jeremy Usbourne (Robert Webb), more commonly known as Jez is one of the two protagonists in the television series Peep Show.

Jez is an unemployed, aspiring musician and a "work-shy freeloader" who lives in the spare room of Mark's flat. He is cowardly, juvenile, and quite arrogant, also considering himself to be immensely talented and attractive. However, Jeremy is more socially skilled and confident than Mark.

Jez becomes emotionally involved in his relationships with Toni, Nancy, Big Suze, Elena, and Joe. Although Jeremy primarily engages in heterosexual relationships, there are several instances of bisexual desires and experiences. In series 4, while discussing with Sophie, Jeremy reveals that he has had sex with more men than she has (four). 

Having life-coached Megan in the series 9 episode "Gregory's Beard", Jeremy has sex with Megan's boyfriend, Joe, which leads him to reevaluate his sexuality and question if he in fact loves Joe. He later begins to talk to Mark about his sexuality before finding out that Mark (as well as Dobby, Gregory, and Super Hans) already knew due to surveillance cameras in Mark and Jez's flat. 

In "Threeism", he admits that he's neither gay nor straight, although he refuses to define his sexuality outside of those broad terms. Arguably, his relationship with Joe is the healthiest he has throughout the show, as both partners are actually committed and do not display ulterior motives (a common feature of Jeremy's relationships with women).