From the man himself:

BBC reporter Alan Johnston has said it is "just unimaginably good to be free" after 114 days in captivity in Gaza.

He said his ordeal felt like being "buried alive", and was "sometimes quite terrifying". ...

He thanked colleagues, international media and ordinary people for organising "the most extraordinary international campaign" for his release.

"The thing you don't want is to be left behind, buried alive, and have the world go on around you," he said.

He appeared with a cleanly-shaven head, saying one of his first acts after his release was "going to the barbers and getting rid of that just-kidnapped look".

"Maybe you have to have been a prisoner of some kind, for some time, to know how good it is just to be able to do the basic things that freedom allows," he said.

"You want to do everything at the same time, to read books and newspapers, go to the movies, go to the beach and sit in the sun, and eat and talk and all the rest of it."

A related BBC feature -- Journalism: A dangerous profession

Actually, here's the full-meal-deal Alan Johnston page.

This Guardian story suggests Johnston's next posting will be in London at the BBC World Service:

Johnston also suggested it would be some time before he returned to a danger zone. "I probably spent too much time working in the most appalling places I could think of and working too hard, and not enough with family and friends," he said. "I'm going to be careful, I think, and keep out of trouble for a while."