Honestly I somewhat prefer George Noory, the guy who replaced him on Coast. That said, Art certainly is an important factor in the history of Talk radio. And his heyday in the 90's certainly fit in with the times: turn of the millennial conspiracy theories, alien abduction, men in black riding in their silent helicopters. Y2K coming and wiping everyone out. Great times. I don't really give much credence to much of what he spoke of, but as a writer it certainly is fun to think about .
My favorite call of his is the infamous Area 51 caller. If you've not listened I highly recommend it.
https://youtu.be/ee3bld4lTG0?t=45s One of the few moments that legitimately freaked me out.