[Gibbon1]

I'm unsure but I think 6502's are available as cores for semi and full custom IC's. Where the the processor core and memory is fully laidout. Bonus runs with a GHZ clock which gives you the ability to twiddle bits like mad.

So outside of retro computing you won't see a 6502 IC in the wild. But they likely are buried deep in nondescript IC's

[fulafel]

http://www.6502.org/commercial lists some of these.