Google Calendar: Your modals suck.
Seriously, don't you ask your candidates about Fitts' Law during interviews any more? It's not like scheduling recurring meetings is an infrequent event, especially at a business, making this a merely occasional annoyance. This MUST annoy Google employees too. And I KNOW you all have big monitors like I do. And I KNOW you have crazy-full schedules like I do, which means that like me, you benefit from letting your calendar browser window take up a big chunk of monitor real estate. (PS -- the new headers look nice but take up too much vertical space.)
I hate that you use SO many modals in Calendar's interaction in the first place. But if you insist, can't you at least read the fucking cursor x,y and situate the modals under my cursor instead of reading the browser's viewpane dimensions and centering? The math is actually EASIER to put the modal under my cursor than to center the thing onscreen, right?
While "Repeat" isn't something I have to do for every meeting, SAVE is. You elected to use a modal to ask me whether I want to send an invite to new guests (can't you just make it an inline option near the SAVE button that's sticky with my previous choices?), and that too is centered -- rather than being proximate to the SAVE button, where by definition my mouse just was:
Seriously, you can do better. Stop copying Outlook.