Listed for your enjoyment / approval are what I consider to be the 64 best Hasbro action figures made to date. I consider them the best based on Sculpt, Articulation, Aesthetic, and/or "coolness". I realize this makes the selection process a bit arbitrary, but I guess if I'm making the list, I get to make the rules. I mentioned which collection some of them are from... for the others, you should assume it is the most recent offering of the character.
Some, like Oola and Zuckuss take us back aways, but they are fantastic figures. Others like Ephant Mon and Hermi Odle are just so amazingly sculpted that there is no doubt about their addition to the list. Still others I imagine are just personal favorites. This is my tournament of 64... some figures were "on the bubble" like the ROTS Aayla Secura and Garindan. I'm sure there were some snubs, but here you are in no particular order:

Evolutions Darth Vader
Secret Apprentice Sith Lord
McQuarrie Luke
McQuarrie Boba Fett
Commander Gree
Yoda & Kybuck
Kit Fisto Clone Wars (shirtless)
Luminara Unduli (AOTC)
Darth Revan
Oola
Zuckuss
Coleman Trebor
Pote Snitkin
VOTC Chewbacca
Barriss Offee (ATOC)
VSTC Biker Scout
Amanaman *(or perhaps the new comic pack one... don't have yet)
VOTC Boba Fett
A-Sharad Hett (comic pack)
Mara Jade (comic pack)
Darth Talon (comic pack)
Durge (comic pack)
Quinlan Vos (comic pack)
J'Quille
Evolutions Clone Trooper ROTS
Anakin (Battle Damage!) ROTS
Kir Kanos (comic pack)
Ephant Mon
VOTC Stormtrooper
VTAC IG-88
VOTC Han Solo
Hermi Odle
Coruscant Clone Commander
Clone Scuba Trooper
Yarna D'al Gargan
Oppo Rancisis
Evo Sith Legacy Darth Maul
Death Star Gunner Saga (removable helmet)
Tsui Choi (Order 66)
Evolutions Count Dooku
Evolutions Padme Arena
Pre-cyborg Greivous
Tion Medon
VOTC Yoda
Gragra
Tusken Raider Female
VOTC R2-D2
Ellorrs Madak
Evolutions Jango Fett
Asajj Ventress (comic pack)
Graxol Kelvyyn
Ask Aak Senator
VSTC Tusken Raider
Battle Damaged Vader (Force Unleashed)
CW Anime Gen. Grievous (Cartoon Network)
Evolutions Anakin ROTS
VSTC Luke Pilot
Evo Sith Legacy Darth Nihilus
Chi Eekway
Darktrooper
McQuarrie Starkiller Hero
Pablo Jill
Tri-Droid
Scorch