I just love his obscure-reference analogies. He's got a brain like a bear trap. It's one thing to know all those facts, and it's another to connect them in creative ways.
Yes, that's what was good about him, when he was good. He uses a wider range of source material to find less-than-obvious patterns in current events.
Have you ever heard of a British stand-up named Eddie Izzard? He is much more -er- colorful than Miller, and more blunt; but he also draws from much more interesting sources than 'I don't understand women, blah blah blah...' His sarcastic edge is also well honed; his routine doesn't consist so much of jokes as of scathing commentary. You may like it.