The Internet SF Book Database
[Jack Vance]
(edited by Till Noever)

Available at  http://julmara.ce.chalmers.se/SF_archive/Vote_db/

Out of 309 entries, Jack Vance is mentioned 38 times. That makes him by 
far the most-often mentioned author in that list

The titles are arranged in the following order:

Mean  No of
Score Voters  Title (Publishing year)          
----------------------------------------------
4.95 (23) Lyonesse II: The Green Pearl (1985) 
4.93 (30) Cugel's Saga (1983)                 
4.92 (13) Maske: Thaery (1976)                
4.86 (30) The Eyes of the Overworld (1966)    
4.85 (20) The Dragon Masters (1963)           
4.82 (28) City of the Chasch (1968)           
4.78 (28) The Dirdir (1969)                   
4.78 (23) Lyonesse (1983)                     
4.78 (14) Showboat World (1975)               
4.76 (17) The Last Castle (1967)              
4.75 (25) Servants of the Wankh (1969)        
4.73 (15) The Face (1979)                     
4.72 (25) The Pnume (1970)                    
4.71 (14) Marune: Alastor 933 (1975)          
4.70 (24) The Dying Earth (1950)          
4.70 (17) Emphyrio (1969)                     
4.68 (16) The Palace of Love (1967)           
4.66 (15) To Live Forever (1956)              
4.64 (25) Lyonesse III: Madouc (1989)         
4.63 (19) Trullion: Alastor 2262 (1973)       
4.62 (16) The Book of Dreams ()               
4.60 (20) Star King (1964)                    
4.60 (15) Night Lamp (1996)                   
4.56 (16) Rhialto The Marvellous (1984)       
4.55 (18) The Anome (1973)                    
4.52 (17) The Killing Machine (1964)          
4.50 (18) The Languages of Pao (1958)         
4.50 (18) The Asutra (1974)                   
4.49 (26) Araminta Station (1988)             
4.46 (15) Wyst: Alastor 1716 (1978)           
4.44 (18) The Brave Free Men (1973)           
4.44 (18) The Blue World (1966)               
4.36 (11) The Dying Earth (1950)              
4.30 (13) Big Planet (1957)                   
4.26 (19) Throy (1992)                        
4.20 (10) The Gray Prince (1974)              
4.18 (11) The Five Gold Bands (1953)          
4.00 (10) Space Opera (1965)   

Lyonesse II: The Green Pearl was in 3rd place on the list.

The only ones to score higher than Jack were:

5.00 (12) The Lion, the Witch and the Wardrobe (1950)  by C S  Lewis
4.96 (28) Lord of Light (1967)                         by Roger Zelazny