[Matth]

It is possible to filter for "Your address not in TO: ot CC:" - but before that, you need to weed out any BCC: mail that you DO expect - some people do run a "poor man's mailing list" in that way.
If you have multiple accounts, you also need to select the correct account, or list all your valid email addresses (and remember to update if you add accounts, or you'll get nothing).

Where possible - I use "Delete from server" - this works only if the rule can be assessed from the header only (this can be!).

Remember, Outlook Express (this is my example) processes the rules in order, so by starting with a set of "pass" rules that include the action "Stop processing more rules" (as the only action, or in addition to moving to a folder), then your "junk it" rules, you can have considerable selection.