Building a Library

I've been re-reading some of my old books lately while my dad watchs the golf channel - non stop.  I've watched more golf this year than I care to. At any rate, as a result I'm looking at my library and thinking it needs some serious upgrading and some new books wouldn't hurt either.  I love the look of built in bookcases, but I must admit that I'm not sure I want to invest that much into this house.  After my dad goes I will have to do a major overhaul anyway and I really do not think we can add built-ins into the budget.  However, I am looking for inspiration.  This is my favourite so far.