Useful Bookmarklets

These affect highlighted text (Example, Highlight " pulaski " and click below) or pop up a prompting window
Wiki
Google
Dictionary
Movies & TV
OpenLink
Google Phonebook

These affect the page you're on
zoom images out
zoom images in
restore context menu
restore selecting
view cookies
zap cookies
google translate
int/ext links
hrefs as link text
full urls as link text
Whois

More at
http://www.squarefree.com/bookmarklets/