Don't they?

When I type this message (on mac firefox), ctrl-a/e takes me to the beginning and end of the line, which is what I expect. Also, ctrl-w, deletes a word backward, ctrl-k kills to the end of the line.

Most of these seem to work http://cheat.errtheblog.com/s/bash/

EDIT: I should add one more thing ... ctrl-w on firefox is very useful in the location bar (as in, it's very smart about what it defines as 'a word').