A little bit of realism ...

Serge Birault

Not sure what "hyperrealism" really means, and it's not very important. Here's a list of painters who do incredibly technical stuff. If you don't like hyperrealism, at least you can learn a few tricks (a lot of them use to post and share steps).

Serge Marshennikov

(Oil)

http://serge-marshennikov.tumblr.com/

http://www.facebook.com/pages/Serge-Marshennikov/179567758778060

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Robin Eley

(Oil)

http://www.robineley.com/

http://www.facebook.com/RobinEleyArtist

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Atsushi Suwa

(Acrylic)

http://members.jcom.home.ne.jp/atsushisuwa/

http://atsushisuwa.cocolog-nifty.com/

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Hubert de Lartigue

(Acrylic/airbrush)

http://www.hubertdelartigue.com/

http://www.blogger.com/blogin.g?blogspotURL=http://hubertdelartigue.blogspot.com/

http://www.youtube.com/user/hubertdelartigue

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Javier Arizabalo

(Oil)

http://www.javierarizabalo.com/

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Pedro Campos

(Oil)

http://www.pedrocampos.net/

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Juan Cossio

(Oil)

http://juancossio.com/

Of course, it's not an exhaustive list. If you know some interesting hyperrealist artists, don't hesitate to post a link on your comments.