The Sicilian Najdorf: 1.e4 c5 2. Nf3 d6 3. d4 xd4 4. Nxd4 Nf6 5. Nc3 a6

White's follow-ups includes 6. Bg5 (Tal's favorite), 6. Bc4 (Fischer's choice), the 6. Be3 (the English Attack), 6. Be2 (typically transposing to the English), and 6. f4.  I began by playing 6. Bc4, which I occassionally like to mix in, but primarily I play the 6. Bg5 lines.

What does everyone else think?

And if you want to a crash course in the 6. Bg5 Najdorf, check out sharpchess.wordpress.com . It looks over the 3 major reponses to 6. Bg5 and then the big lines that derive from them with a number of famous games to highlight White's attacking chances.

thanks! good resource!