A most useful list, Caitlinn!
The situation with regard to the -ize words is a complicated one, and many people assume that -ise is the accepted Brit fashion. (MS spell-checkers make this assumption, whereas Macromedia give you the opportunity to set "UK English (-ise)" or "UK English (-ize)". The OED always prefers the -ize form, except where for linguistic/etymological/logical reasons it should be -ise (eg., promise), and if you look at the spelling I use in my other posts you will see I am loyal to this style, out of affection for my alma mater (or affectation?!) The "other place" (that one in East Anglia) prefer the -ise forms, I think I've heard it said, but then they were always a weird lot!
An advantage of the -ise style is that you don't have to remember the exceptions to the rule.
One thing I find funny is the spelling "analyze". Since it is from the Greek "analuo" and not "*analuso", it should surely always be "analyse". If you think that "-ize" (from the Gr "-izo") has the effect of rendering something into something else (eg. "realize" makes something "real") the absurdity of "analyze" becomes apparent!)
There is another useful list of Am v. Brit spelling at
http://www.peak.org/~jeremy/dictionary/tables/spellcat.phpAnd there are some interesting discussions of -ise/-ise at:
http://www.askoxford.com/asktheexperts/faq/aboutspelling/ize?view=ukhttp://phrases.shu.ac.uk/bulletin_board/13/messages/785.htmlhttp://home.online.no/~shughes/a57998/izeise.htmland elsewhere if you google for "ize ise".
BTW, I think "arguement" is always wrong, or at least rare, even in Brit. "Aging" seems to be a matter of taste.