This thread at Stack Overflow is just terrific. One for your bookmarks.

Related:

help.hackshackers.com: “What are the best tools for “scraping” data off a Web page for analysis in Excel or other software?”

Will Larson: “An Introduction to Compassionate Screen Scraping”

Michelle Minkoff: “How to Scrape Websites for Data without Programming Skills”

Firefox plugin: Outwit

Dan Nguyen: “Coding for Journalists 101 : A four-part series”

Prog-a-Month: “Easy HTML web scraping with Groovy and Java. (w/XOM)”