I think this question could be suited for the Anime Recommendations thread:
http://www.christiananime.net/showthread.php?t=40642 Besides just asking for new titles to watch, that thread can also allow you to ask about the content of anime series/movies. But RobinSena's link should answer most of your questions, though the thread is rather old.
I have not seen Paprika, but I know many other members have seen it and can tell you the nature of its R rated content (over PM, preferably). They don't rate movies R without a very good reason.
Also, RadicalDreamer loves Paprika, so if you send her a very polite PM asking about the content and promising to make her a sandwich, I'm sure she will answer your questions about the movie's content. ^_^