i personally dont believe its a sphere or an oval nor do i believe that its flat like a disc.
its definately an interesting topic that explains a lot of other things if you believe it.
first the flat earth side:
an article on a flat earth
flat earth society forum
very good arguements and examples here
my theory in progress
i personally think its a sort of upside down ice cream cone/ egg shape;
here are some very crude 1am paint drawings-
first the most common side:
http://aycu30.webshots.com/image/46869/2001989089542278712_rs.jpg
next from the top:
http://aycu34.webshots.com/image/50033/2001914168326024866_rs.jpg
african side:
http://aycu32.webshots.com/image/48231/2001987387509738911_rs.jpg
and bottom:
http://aycu05.webshots.com/image/48404/2001942175354295679_rs.jpg
since i believe every word of the Bible and take it literally i think that Israel, Jerusalem to be precise, is the 'center' or highest point
also i think the earth sits on legs like a table and we are the table surface i guess, the purpose of the legs is to cause earthquakes and present the earth to God like a model or something, huge angels might be in control of each leg:
http://aycu33.webshots.com/image/49712/2001247284611158646_rs.jpg