Mac or PC: What should I buy? Advise please!

Even after 3 days of extensive thoughts and discussion I am still confused with the decision to buy mac or pc. I have another 18 hrs to decide and buy (my own personal deadline). Comments are well appreciated.

I am going to to use this machine for the following most of the times:

  • Normal daily use like emails, web browsing etc.
  • Programming (Java, Oracle etc.) and application servers (JBoss etc.)
  • Photos and Videos (Non-Professional)
  • Blogging
  • Music
  • Movies