Star_trek_24this_side_of_paradise_al_di_la_del_... Link

In the Star Trek: The Original Series episode " This Side of Paradise " (Season 1, Episode 24), the Enterprise crew visits a colony on Omicron Ceti III where they are exposed to spores that bring peace and bliss, forcing Spock to express emotions. Captain Kirk must then figure out how to break the spell and save his crew from the idyllic, emotion-free life. You can find this classic episode and more information on sites like Memory Alpha and Wikipedia .