Some things are just real while some things are simply fake and hollow. Both of these are experiences perceived to be real by the mind probably although I am not completely sure about that.
So to start it off:
1) At my number one is the real world versus the TV world.
Real world: When you can hear your neighbour quarreling with his wife over whose turn it is to do the dishes. And you get irritated so much so that you have to get a temporary restraining order against that neighbour because you feel threatened.
Virtual and TV world: When you watch a funny TV show where the main character say Raymond and his wife are arguing over whose turn it is to do the dishes. And you laugh so much that you fart, thereby irritating all the people who are in the room with you.
2) At number two is practicing the beauty of life versus just understanding the beauty of life.
Practicing philosophy: On a bus when you see a smile from the opposite sex, you smile back, turn off your mp3 player or close your book and begin a spontaneous conversation that might change your life.
Just understanding the beauty of life: On a bus, the book is read or the music is listened to with the most pleasure,which you have experienced countless times. You don't care/know what is happening around you most of the times. All you care about is knowledge, this life which you can analyze with the most precision. This regurgitated knowledge which is supposedly the backbone of society smiles back at you and you smile back. Of course, it doesn't matter that all you have done is become great at analyzing this mecca of human wisdom while there's not a shred of it that you have come close to in experience.