I love trains in the UK! All the train rides I've been on have been great. I had one to London last year, and the coach was almost empty the whole way, my seat was suuuuuper comfy, and the weather was nice so the views of the English countryside were awesome.

I really, really hate flying. It plays havoc with my teeth - I think it's the pressure in the cabin, and if I nod off while sitting up on a plane I grind/clench my teeth and the last time I did that I had such a sore mouth I couldn't eat without being in pain. Also, people can be real smurfing inconsiderate jerks on flights.