Hmmm.... There are so many different ways to evaluate the "Best" game... so I'm going to break it down...

Pure, Sheer Entertainment:
Grand Theft Auto 4. Why? That game you can play for hours. Whether you follow the story or not. Plus, the character development is so well done. As you play each character you interact with including the main one, you feel empathetic towards them. If he is a baddy, you feel the hate for him, but if he is a girl that you are trying to get with, you can feel the desire to be with that character in the game.

Story:
This is a hard one. There are a lot of games out there with a great story. But I'd have to give this category to the Modern Warfare series of Call of Duty. In MW1 and MW2, the stories are short, yes, but you want to move on, and complete the story just to find out what happens. Of course there are other games out there that have an equally engulfing story, such as Fable and Mass Effect. But Modern Warfare 1 and 2 take the cake here.

Realism:
Ever play a game and you felt like you were in it? Something so realistic that you could swear it was a movie? I would say this one goes to Gran Turismo 5, but since that isn't out, I'm going to have to give this one to Forza 3. Hard to say why, but I believe it is the physics engine. When you turn, everything just looks like you are in the car, actually driving it. even though you are sitting on your butt in a chair, you feel like you are in the car, taking the corner.

Thats all I have for now...

I have WhatsApp for iPhone... Best. Messaging. App. Ever.

I love it.... so much better than BBM in my opinion... and the UI is awesome (for iPhone vs BBM)

Rumours is that iChat for iPhone is coming... we shall see what that is like.