I think we had this thread way back in the old Forum "> and I'm trying to cheer me up right now, so I thought let's give it a try. It's not about the best performers, just the ones you always enjoy seeing on screen. 
I'll list them alphabetically by country (where they were born), as there are just too many. 
Maybe I'll make a Top list in the future "> 

Algeria 
Daniel Auteuil 

Austria 
Erich von Stroheim 

Canada 
Anna Paquin 
Marie-Jose Croze 
Sarah Polley 

Cuba 
Tomas Milian 

Denmark 
Anna Karina 
Mads Mikkelsen 
Paprika Steen 
Ulrich Thomsen 

France 
Arletty 
Bernadette Lafont 
Catherine Deneuve 
Dominique Blanc 
Franoise Lebrun 
Isabelle Adjani 
Isabelle Huppert 
Jean Gabin 
Jean-Luc Godard 
Jean-Pierre Laud 
Julie Delpy 
Juliette Binoche 
Michel Piccoli 
Nathalie Richard 
Romane Bohringer 
Simone Simon 

Germany 
Brigitte Hobmeier 
Christiane Paul 
Devid Striesow 
Jrgen Vogel 
Katharina Schttler 
Moritz Bleibtreu 

Hong Kong 
Leslie Cheung 
Maggie Cheung 
Tony Leung Chiu Wai 
Yun-Fat Chow 

Hungary 
Eszter Balint 

Italy 
Franco Citti 
Franco Nero 
Gian Maria Volonté
Silvana Mangano 
Valeria Bruni Tedeschi 

Ivory Coast 
Isaach De Bankolé 

Japan 
Chishu Ryu 
Koji Yakusho 
Naomi Nishida 
Tadanobu Asano 
Takeshi Kitano 

Poland 
Pola Negri 

Portugal 
Maria de Medeiros 

Soviet Union 
Anatoli Solonitsyn 
Yekaterina Golubeva 

Spain 
Javier Bardem 
Mara Casares 

Sweden 
Greta Garbo 
Ingrid Bergman 
Stellan Skarsgard 

Switzerland 
Sabine Timoteo 

Taiwan 
Kang-sheng Lee 

UK 
Cary Grant 
Charles Chaplin 
Claire Forlani 
Claude Rains 
Jane Birkin 
Samantha Morton 

USA 
Bette Davis 
Bill Murray 
Bill Pullman 
Buster Keaton 
Chloe Sevigny 
Crispin Glover 
Dennis Hopper 
Harvey Keitel 
Jack Nicholson 
Jeff Bridges 
John Malkovich 
Johnny Depp 
Kirk Douglas 
Lillian Gish 
Marisa Tomei 
Meg Ryan 
Nicolas Cage 
Nicole Kidman 
Robert Mitchum 
Sean Penn 
Vincent Gallo 
Willem Dafoe 
William Hurt 

To be continued