Search Wikipedia via Selected Text ?

You know how if you highlight text on a page, and right click what you selected, the context menu opens and you can select "Search google for ______" ? Is there anyway to make it so you can add an entry into that same context menu, that will do the same for Wikipedia? Like "Search Wikipedia for *selected text here*" ? Thanks guy...

Helps to mention the program.

Opera will do this by default. Firefox will probably need an add-on, but I'm not sure as I don't have it installed anymore.
http://support.mozilla.com/en-US/questions/740824

Not sure about Chrome or IE.

When using FireGestures, if you highlight a word (double-click on it, and you can remove the trailing space - in Firefox - by changing the layout.word_select.eat_space_to_next_word about:config variable to false) and then do the right-down mouse gesture, I'll get the popup with the options to search for the selected text in the various search/info engines. It looks like this:



It's not as perfect and clean as having the option directly on the right-click menu, no, but then again it doesn't clutter up the default right-click context menu with those other entries either.

There's another addon called Menu Editor that may offer the ability to add a Wikipedia entry on the right-click menu as well. I just find FireGestures easier to use personally; the two dozen or so gestures I've created (new ones, as well as the basic defaults) let me do a ton of stuff with highlighted text and a flick of my wrist. Once it becomes habitual, it's pretty powerful stuff...