My personal favrite is probably the Imperial Officer. Great sculpt, great army builder... Poorly named since he's not in an officer's uniform, but he's a great army building figure.
Others I'd list:
-Bespin Guard... AWESOME sculpt, articulatin, accessries, features (removable hat, weapons, etc.), and just an all-around good figure.
-Zutton... Odd we got a holiday special figure when we already had the Cantina's Takeel, but he's still welcomed, and poseable to an extent with cool accessries.
-Duros... First Fan's Choice, and while lacking in articulation he was a neat sculpt and paintjob. Good ankle holster and blaster too.
-Amanaman... Beyond the $10 pricepoint and floppy staff he's an actually awesome figure.
-R2-Q5... Best astromech sculpt, and start of great things to come. Super poseable too.
-R4-M9... Same as above with finally giving us a NEW astromech type. Poseable ankles, third leg's retractable 3rd leg... Perfect astromech.
-FX-7... Superb sculpt, and each arm's double articulted. Can't ask for much more.
-Sandtrooper... Again, could be a little more pseable, but the articulation isn't terrible, the sculpt's incredible, the shoulder pad's nice (and his variant 4-pack was great), and I was happy to nab a few.
-Teebo... Best Ewok ever, and the only poseable one.
-EW Vader... Nice concept, good execution. Happy to have him with some boomer damage lighting effects wrapped around his legs and arms.
-Mon Cal Officer... Great reuse of the already good Ackbar sculpt with only minor improvements/changes. Great pistol. Great helmet. Great figure.
-K-3PO... Same as Mon Cal in taht it gave us obscurity at little to no major cost to Hasbro. Gimme more really.
-Porkins... Bout time.
-Bo Shek... See above, but the helmet most iddn't even know existed, the newly sculpted blaster with working holster, and the awesome overall detail they captured in such a boring guy is nice. Great figure.
-Tessek... Great sculpt, decent articulation, nice pistol with working holster. Needed update from vintage.
Those would be just some of my favored figures... All hits, even if they have minor things that could use a tweak or two. Namely, articulatin. Hasbro was still hesitant to do much articulation-wise in the POTJ era. A shame because a lot of those figures would rival current hits like the Cloud Car Pilot with just a couple points or four more in articulation.
Overall though< POTJ had lots of hits. Sometimes even "misses" still were at least improvements. Like Bespin Escape Leia, or Bespin Lando.