What are some great comets named after people?
Great comets named after people: 
 - Aristotle's Comet
 - Caesar's Comet
 - Donati's Comet
 - Halley's Comet
 - Comet Skjellerup���Maristany
 - Comet Arend���Roland
 - Comet Mrkos
 - Comet Ikeya���Seki
 - Comet Bennett
 - Comet Kohoutek
 - Comet West
 - Comet Hyakutake
 - Comet Hale���Bopp
 - Comet McNaught
 - Comet Lovejoy