When I arrive at work at the exact same time as a coworker, I will intentionally wait in my car until they are close enough to the building as to avoid the awkward door-holding moment. If we're too close together they'll open the door and let me go first (making me feel like a chick on a date). If we're too far apart I'll feel like I need to do the fake-jog that doesn't actually make me go any faster, but will make it seem like I'm trying to not be dick for making them wait for me.