HLTV.org put together their top 10 list of the most insane professional gamer frags from Counter-Strike from 2013.

#10 Delpan vs. Natus Vincere - DreamHack Bucharest 2013
#9 allu vs. ESC Gaming - ESEA Invite Season 13 Europe
#8 GeT_RiGhT vs. mousesports - SLTV StarSeries V
#7 kRYSTAL vs. mousesports - SLTV StarSeries V
#6 centeks vs. fm.TOXIC - ESWC 2013
#5 AREA vs. redzone - EPSILAN 10
#4 peet vs. LowLandLions - ESEA Open Season 13 Playoffs
#3 GeT_RiGhT vs. Astana Dragons - MSI Beat It! 2013 EU Finals
#2 shox vs. n!faculty - DreamHack Winter 2013
#1 SKYTTEN vs. n!faculty - MSI Beat It! 2013 EU Finals

Well, those reaction times are certainly faster than anything I could ever attain. All credit for this compilation goes towards HLTV.