Off the top of my head, so I'm sure I'm missing some:
The other mods for making my life easier (especially kkbmustang, swick, and Russ)
bo_knows for cFIREsim
James for his down to earth posts
Sol, for his Philosophical questions
Another Reader, for his real estate experience
Kriegsspiel for his humor
Nords, for his military and ER experience
RootofGood for setting a real FIRE example
Bakari for his out of the box thinking
grantmeaname, for his eloquent arguments
matchewed, for his insightful posts
warfreak2 for his logic/math
MMM for kicking this shindig off and setting a great example