I always like reading about the challenges that people set themselves in Ham Radio. Challenges come in all sorts of shapes and sizes. Keith, G6NHU's QSO365 project has rightly attracted a lot of attention.
Here's a fun one, too, that I read about yesterday. Nick, N1IC has set himself the challenge of making contact with each of the 50 states of the USA using D-STAR, in 50days.
You can read about Nick's progress here
I'm certainly going to look out for Nick on D-STAR. I won't be able to help him with a new state, but it'll be nice to say hello.