I followed the instructions given in these videos and got a 117/120 in my TOEFL. Break up was Reading (29), Listening (30), Speaking (29) and Writing (29).
Reading and Listening weren't too difficult, but I was really concerned about my speaking as I am not a native speaker. I speak fluently, but the idea of talking to a PC got me a little nervous and I ran out of ideas quick. Never the less, I followed the speaking instructions given in these videos and stuck to the format, and voila! 29/30!
As far as writing goes, again stick to the formats provided in other threads on this website, and if you want a 28+ score, make sure you write atleast 450 - 500+ words essays!
I applied to Annenberg School of Communication and Journalism at USC, and they demanded for a 115+ TOEFL score. I was super glad to see my result. Thanks to GMATCLUB members for posting out such quality material. You guys are way too cool for school

Regards,
Karan