That AO3 hit count meme (snagged from Sabaceanbabe, and then ruthlessly (okay, maybe not ruthlessly) modified):
Rank - Story - Fandom - Hits
#1.
Castiel, in the Shadow of Leviathan. Supernatural. 1593 hits.
#2
The Haole Says. Hawaii Five-0 (2010). 1176 hits.
#3.
Three Women, not Norns. Thor. 1117 hits.
#4.
Codas, brah. Hawaii Five-0 (2010). 1012 hits.
#5.
Haves and Have Not. Hawaii Five-0 (2010). 735 hits.
#6.
The Green Isle. Dresden Files/Hawaii Five-0 (2010). 718 hits.
#7.
Left Graceless. Hawaii Five-0 (2010). 663 hits.
#8.
People talk like that. Hawaii Five-0 (2010). 608 hits.
#9.
The Name to Take. Hawaii Five-0 (2010). 582 hits.
#10.
His hold under fire. X-Men: First Class. 531 hits.
and the ten least-read fics:
#1.
Lament. Star Trek: Enterprise. 16 hits.
#2.
Blame Game. Numb3rs. 21 hits.
#3.
He, You, and I. The Phantom (2009). 22 hits.
#4.
Mind of the Dog. The Dresden Files. 26 hits.
#5.
Griffins. Alphas. 28 hits.
#6.
And everyone with their speciality. Primeval. 28 hits.
#7.
The name may not be spoken. Kings/linguistics. 29 hits.
#8.
The female of the species. Primeval. 32 hits.
#9.
22nd Century Vampires and Cretaceous Zoes. Terra Nova. 34 hits.
#10.
Shake on it. Night at the museum: battle of the Smithsonian. 35 hits.