I've been writing up a posting on when to use SSE, and I discovered that Windows Live Writer checks your posts for spelling as you're writing. You get those familiar red squiggly lines that you're used to from Microsoft Word.
I guess I haven't been using computers long enough to get over the amusement when the spell checker doesn't recognize some bit of jargon that I'm using. In this case, it wasn't happy that I wrote "automagically", and suggested quite a few alternatives:
Still a great feature--I'll take the occasional entertainment value as a bonus.