Does the PS3 come with everything I need to play Blu Ray movies or do I have to buy an external remote or something?
You can use the controller. Only use the remote of you feel like you need the 'authentic' experience
The PS3 I find makes an awesome DVD and Blu-Ray player. It's picture is a lot better than the standalone BD Players I've seen. Only issue I have with the PS3 on that end though is that the effin' controller does not auto-shutoff after 5 mins or so of inactivity. This means while your movie is playing, you gotta take those extra 5 seconds to hold the PS button, choose to shut off the controller, and disturb your movie watching. I'd rather just put the controller down like the other consoles, but no, Sony are lazy bastards.
--Henry