BeetleJuice

Betelgeuse used advertisements (such as flyers, business cards and a commercial, where he said some questionable things about chewing and swallowing) to get the Maitlands to hire him as a "bio-exorcist" to rid their house of the Deetzes. They thought it was odd that the business card and flyers contained no address or phone number. The Maitlands summon him when they learn that he can be summoned if his name is said 3 times in a row. When that happened he disappeared into dust.