That's a really tough question to answer. I have worked with some really talented people of the years, but I have to say that two names always stand out, even among a pool of incredibly talented people.

Miguel Cardona (http://mc82.com/), currently working as a professor at RIT. I worked with Miggi a few years back. He's an amazing illustrator, designer, and developer. Not only did he do these things well, he was constantly learning and tackling new challenges.

Ali M. Ali (http://www.alialithinks.com/), another fellow designer. Like Miggi, he is so talented that he pretty much excels at any creative pursuit, be it design, photography, motion, etc. Ali has an amazing eye for UI and motion work.

I look up to both these guys and strive to work on their level.