Jessica Simpson Images

Jessica is a name from the Hebrew Yiskah, name of a daughter of Haran, meaning "the Lord beholds" or "the Lord's gift". The Hebrew root sakhah means "to see" so the name Yiskah, with the added yud implies foresight or clairvoyance. There is midrash by Rashi suggesting that Yiskah is also a name for Sarah so the meaning of this name makes sense for two reasons: people would gaze at her beauty and she was known to be a prophetess. The name Jessica also stands for wealth.

Jessica was first used in Shakespeare's The Merchant of Venice as the name of Shylock's daughter.
Jessica was one of the top three baby names throughout the 1980s-90s.
"Jessica" is an instrumental hit by the Allman Brothers Band, and theme tune of Top Gear.
Jessica is a novel by Australian author Bryce Courtenay
People named Jessica:

Jessica Alba, actress
Jessica Andrews, singer
Jessica Atreides, of Frank Herbert's Dune
Jessica McClure, "Baby Jessica"
Jessica Lange, actress
Jessica Lynch, rescued American POW
Jessica Mitford, political activist
Sarah Jessica Parker, actress
Jessica Rabbit, from Who Framed Roger Rabbit
Jessica Sierra, American Idol contestant
Jessica Simpson, singer
Jessica Steen, actress
Jessica Tandy, actress