Reality television shows like The Only Way Is Essex and Made in Chelsea primarily target teenagers and young adults as their audience. Documentaries provide factual information and tend to appeal more to older viewers aged 40 and above, though some younger people may also watch them. Comedies come in different forms like stand-up acts or sitcoms, with sitcoms on channels like E4 targeting teenagers and young adults as their key demographic through shows such as Friends and The Big Bang Theory.