While a big part of The Bonham Sound is Bonham's amazing technique and flair, a lot of what I associate with his sound has a great deal to do with the savagely compressed room mics. With a good room and decent compressor you can get sonically close to that sound with just one microphone. It's just a case of finding the right (read world class!) drummer.
Good piece though. I recorded a band yesterday, and they'd all being partying all Easter weekend. They sounded shit, and we faffed around with mic placement etc until they were ready to accept they were playing like a bunch of tw*ts and they went home. We'll try again today. Performance is everything!