Oh, I know you meant "like" as in "such as," but what I meant was... I use it for that in addition to just a "throw in" word. LOL.
The comma in a list! When I was in college, my psych teacher marked me for missing that comma. (As if!) Well, he circled that I made a mistake, but he didn't deduct any points.
Also the "canceled" thing! That just came up at my work the other day. Because I work at a hotel, it comes up rather frequently, but usually not "cancelled" so I looked it up (thinking perhaps that was an accepted spelling), and it's the *British* spelling. Made perfect sense... our General Manager is British!