Arthur C. Clarke Award Winners
http://www.eyrie.org/~eagle/reviews/clarke.html

Reviews of Hugo Winners
http://www.eyrie.org/~eagle/reviews/hugo.html

James Tiptree, Jr. Award Winners
http://www.eyrie.org/~eagle/reviews/tiptree.html

John W. Campbell Award Winners
http://www.eyrie.org/~eagle/reviews/campbell.html

Lambda Literary Awards
http://en.wikipedia.org/wiki/List_of_Lambda_Literary_Awards_winners_and_nominees_for_science_fiction,_fantasy_and_horror

Locus Fantasy Award Winners
http://www.eyrie.org/~eagle/reviews/locus-fantasy.html

Locus SF Award Winners
http://www.eyrie.org/~eagle/reviews/locus-sf.html

Mythopoeic Award Winners
http://www.eyrie.org/~eagle/reviews/mythopoeic.html

Nebula Winners
http://www.eyrie.org/~eagle/reviews/nebula.html

Philip K. Dick Award Winners
http://www.eyrie.org/~eagle/reviews/philip-dick.html

Prix Aurora Award Winners
http://www.eyrie.org/~eagle/reviews/aurora.html

Sunburst Award Winners
http://www.eyrie.org/~eagle/reviews/sunburst.html

World Fantasy Award Winners
http://www.eyrie.org/~eagle/reviews/world-fantasy.html

other useful sites:
http://www.sfsignal.com/archives/2012/03/the-value-of-sff-awards/
http://www.sfawardswatch.com/
https://www.worldswithoutend.com/books_index.asp
http://whatever.scalzi.com/2012/01/05/sff-authorseditorsartistsfans-2011-award-awareness-post/
http://www.sarasotafilmfestival.com/news/view/2250-the-insider-sff-academy-award-winners-and-more