"Very compelling"
Dawkins does a great job of laying out the case for evolution. He cites, in detail, experiment after compelling experiment to prove his points. This book is going to rub creationists the wrong way, as Dawkins rarely hesitates to take shots at them. But, if you can keep an open mind throughout the book, I don't know how you can come away still believing in creationism (at least as taught in the Bible).
"Made me like running"
This book single-handedly made me want to run. I am 31 and had never run more than 2k at a time in my life - and I hated every second of it. Now I'm running at least 3 times a week. I ran 2 miles yesterday and actually enjoyed it.
"Liked it better than End of Faith"
In Letter to a Christian Nation, Sam Harris very succintly lays out the dangers of religious dogma. It contained many of the same points as 'The End of Faith,' but is much more focused. I'd recommend that people start with Letter to a Christian Nation and then read End of Faith if they'd like to get deeper on any of the topics.