A couple of bad ones spring to mind...
...I've done a fair few nightmare journeys.

I travelled on the greyhound in the USA for about two months.

I remember Seattle to New York was about 4 days trapped on a bus with the same sweaty maniacs. This wasn't helped by the two people having sex up the back of the bus at one stage, the man who appeared to be having a conversation with thin air, and the guy who was bragging about busting out of prison. After 4 days on the bus I was a sweaty wreck much like everyone else. My feet appeared to have acquired a layer of cheesy goodness too.

My favourite flight of all time must be Tokyo to Moscow on Russia's national airline, Aeroflot.

In-flight, we were subjected to the same film played twice, some sort of communist soviet propaganda film about the strength of russia's economy and airline (a little wacky bearing in mind this was just a couple of years ago). Flying over China we experienced some of the worst turbulence I've ever known. It didn't help that we were doing the 8 hour flight in a glorified easyjet airbus.

The crowning glory was the flight attendants. They took surliness to new levels. Some guy asked for ice with his complimentary glass of water and the air hostess looked at him like he'd just shat on the floor.

We landed in Moscow in what can only be described as the perfect storm. Lightning was flashing down either side of the plane as we descended. When we touched down the whole plane burst into a round of applause and started cheering.

The connecting Aeroflot flight to London was boring though, no-one cheered when we landed and they never showed the weird communist film again.

p.s. mine could be longer with proper stimulation.
(Rembrandt Q. Einstein perrito caliente, Wed 13 Sep 2006, 11:45, Reply)