Ringo: Left-handed drummer, right-handed drum kit?

Caveat: I am not a drummer.  I don't even play one on TV.

I recall reading somewhere that some of Ringo's fills, riffs, etc. were 
often not the usual ones because he was left-handed, but had his drum 
kit set up for a right-handed drummer.  Is this correct?  Why might he 
do this?

If so, how are drums typically set up for a right-handed drummer, and 
why does that arrangement work better for righties?  (A link to an 
explanation would be fine.)  Thanks!

Adam
-- 
Email: adam seven zero seven at verizon dot net

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