Andy Goldsworthy
http://cgee.hamline.edu/see/goldsworthy/see_an_andy.html

Rivers and Tides. is a documentary about him

James Corner and Field Operations
Shane Coen and Partners

yves brunier

landscapy stuff...

Agence TER

B+B

Gilles Clement

Burle-Marx

Peter Walker

sorry, missed the "contemporary" part, you can remove the last two...

'contemporary' eh?

martha schwartz

reed hilderbrand

george hargreaves

walter hood

ken smith (the name right? he just did the moma roofscape)

michael van valkenburgh

just a few off the top...

Tom Leader Studio

Rios Clemente Hale

Not sure about a website or book....

check todays ny times article

A Landscape exhibit started today at the new MoMA.

http://www.moma.org/exhibitions/2005/groundswell.html

dieter kienast was the LA for herzog + de meuron, dolf schnelbi, and gigon_guyer

i believe gunter voegt runs his firm now.

but he has some great projects in and around zuerich

Check out Dan Kiley "The Complete Works of America's Master Landscape Designer"

Kathryn gustafson http://www.spacemakerpress.com/lfjune98/lfpage05.htm