Argh! So, on our way to Sudan, our bags get stuck at Heathrow airport for a week and a half. On our way back, we land in Heathrow a half-hour late due to congestion. Then we sit on the ground for a half-hour because they don't have the buses to take us to the gate. Then they don't have the stairs. Then they don't have the buses again. By the time we get off the airplane, the next leg of our trip had already flown off.
So then we have to wait at the reticketing desk for a half-hour as we're rerouted through Vancouver (where I am right now) to arrive 12 hours later then originally planned. We get on the plane in Heathrow, which promptly leaves an hour-and-a-half late due to congestion problems (we spent ~45 minutes taxiing).
And then we show up in Vancouver, and our bags aren't here. Yes, that's right, our bags got lost again. Happy happy joy joy!