I've read and enjoyed Greene, Sagan and Bryson but have not read anything by Tyson or Kaku, I'll look them up.
Infinite in all Directions - Freeman Dyson
The Red Limit and The Whole Shebang - both by Timothy Ferris
The Trouble with Physics - Lee Smolin
Also, alee found a free ebook from NASA here:
It's about the X-15 - looks interesting