For me:
To start off:
Hollis J Woods - for his taking the chance and letting me texture one of his meshes, which became my first release.
Darkdrone - the sheer volume of his stuff, plus he got me started on conversions.
Lord Vader - my first real chat-at-me modeller contact
Lord Bile - one of the first to discuss texturing with me.
Captain Starkiller and atticbat - interviewers of modellers who indirectly got me some great tips and tricks.
Pataflafla - one of the best texturers I've ever worked with.. his mastery of PSP is still better than mine.
Sandman3D - always a good sounding board
Atolm - a great design mind
p81 and Lord Schtupp - the masters of their eras.. I love working with both of their works.
And finally, all who post here... I constantly get ideas for projects simply from the "I Wish" type comments that will sometimes spring up. "The Doomsday Machine"'s damaged Constellation that I kitbashed came from one of those comments once..