Jessie hypnotizing Erica
Hypnosis or mind control is the ability to control others. It is a rare and powerful ability that only a few possess. Seer's have been shown to be more resilient, but not immune to at least some forms of mind control.
History
Season 1
Erica hypnotized
It has been shown that some Vampires can control the minds of others. It was first introduced when Jesse uses this on Erica in the episode, "Re-Vamped." Sarah snaps Erica out of the trance by head-butting her.
Atleast some Witches also posses this power, as the Witch Stephanie used it to control Sarah and Erica in Three Cheers for Evil. They were able to free them from it, by using Enchanted Pom poms.
Season 2
The ability was also shown by the Mayan Sky Queen Lucia, who using it was able to enslave the majority of males at White Chapel school, in her plan to bring back her love the Sun King, and end the world. WIth this form, it was possible to free the person, by causing them to touch moonstones, as they represented the moon goddess, Lucia's enemy.