yeah it takes a lot of practice to do those. I remember Jungle Joyride took me a whole day of constantly replaying it get it down perfectly. It's pretty much required to get the platinum.
Although it looks like this guy goes even a step beyond that
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http://img708.imageshack.us/img708/3824/5959429725f9ecccb086.jpg
http://www.yourgamercards.net/trophy/a/CaptainRockman.png