In the 1990s and 2000s, Wicca began to become ingrained in popular culture. Aspects of Wicca were incorporated into the New Age movement, and many Wiccans took on New Age beliefs and practices. Wicca was also taken up by popular entertainment; in 1996, the American film "The Craft" was released about four witches who are corrupted by their power. The same year the television series "Sabrina the Teenage Witch" appeared, which was followed the following year by "Buffy the Vampire Slayer", and in 1998 by the series "Charmed" and the film "Practical Magic". Whilst these were heavily criticized by many Wiccans (Margot Adler called "The Craft" "the worst movie ever made!"), they did encourage many teenagers and young adults to investigate more about the religion. Most covens and Neopagan groups refused to allow under 18s into their ranks, and so many teenagers turned to books to find out more. In turn, several books were published to cater for them, including Silver RavenWolf's "Teen Witch: Wicca for a New Generation" and Scott Cunningham's "Wicca: A Guide for the Solitary Practitioner". This helped to bring about the "Teen Wicca" movement, and it has been suggested that the reason why so many young adults are attracted to the faith can "be attributed to the fact that it tackles issues that teenagers are interested in – in a way that other religions do not."