Websites
An Introduction to Plath
While this site doesn't talk about The Bell Jar in detail, it gives a good introduction to Plath, her major poems, and even the text of an interview with Plath.
Plath's Poetry
This site offers Plath's complete poetic works in alphabetical order.
"A Celebration, this is"
This site, made and maintained by Plath scholar Peter K. Steinberg, has lots of information on Plath's life and work, as well as numerous photos.
Plath on Poets.org
A brief biography about Sylvia Plath, plus several of her most famous poems.
Movie or EV Productions
Sylvia, 2003
Gwyneth Paltrow plays Plath in this biopic about Sylvia Plath's life.
The Bell Jar, 1979
An Australian adaptation of the novel.
Historical Documents
The Unabridged Journals of Sylvia Plath
An article exploring Plath's recently released journals, her life, and her death.
Audio
"Lady Lazarus"
Plath reads one of her most famous poems, "Lady Lazarus."
Images
Images from Plath's Life
This site has a photo gallery of important places in Plath's life, as well as book covers.