Depends how long you plan to stay in the Osaka region. Instead of getting a JR Pass you should research into some of the Sunrise tour plans offered:
http://www.japanican.com/special/shi...dex.aspx#osaka

Some of them are really great deals as they come packaged with round trip shinkansen tickets, hotel accommodations, and sometimes attractions, that all come out cheaper (even cheaper then the JR pass plus hotels) then if you were to pay for things separately.

Again it all depends on your travel plans etc, but something certainly worth looking into.