British Airways and their Terminal Five at LHR...
I flew BA from CDG to LHR, not long ago. The flight was delayed 5 whopping hours. There was literally nothing to do at T3 of CDG. After landing at LHR, we had to wait 30 minutes for a gate. Immigration was slow and inefficient. Over at baggage reclaim, thousands of passengers waited along the carousels waiting for their bag. At my designated carousel, there was only one bag rolling, after 1.5 hours. Whoever owned that bag must've been pretty darn lucky. It was then around 2:30am, when it was announced that baggage reclaim had closed for the night. The next day, I phoned BA's baggage services department and was greeted with a 30 minute waiting period. The representative then advised us that there were tens of thousands of bags at T5, meaning that a physical search for our bags at their warehouse would be futile. Three weeks later, three out of four bags arrived home. The remaining one was sent to Canberra. After it was picked up by the courier, they decided to ship it to Hong Kong, which was my stopover city for a week. One more week later, it arrived. I'm surprised the wheels of the suitcase didn't fall off...