not in order:
Started me playing:
Tony Iommi, Fast Eddie, Brian Tatler
Greatest effect on my playing:
Tipton/Downing, Pete Townshend, Tony Iommi
My brother played me Motorhead, and I thought - "mmmm guitar based rock actually rules". Then I listened to Sabbath and Diamond Head obsessively for 3 months and decided I had to learn. I would have brought an SG, but I saw a Flying V first, and obvious Tatler played one from time to time.
Hard for me to seperate Tipton and Downing as I dont know who exactly writes what in the tracks. I think Tipton has the edge playing wise, Downing is more stylish though ;) I love Townshends rhythm improvisation and chordal solos, I'm always ripping him off. Brought a Sabbath song book to learn guitars, I guess all my riffs are evolved Sabbath riffs in some sort of way.
Some great musicians mentioned in this thread.