Male:
1. Luffy - as the series goes on he looks more mature and pretty darn sexy, not to mention that his serious face rodsftjgdf. <3
2. Usopp - the fact that he manages to look so hot with that nose makes him even more awesome.
3. Franky when he was 20. Ee. <3
4. Iceberg when he was younger
5. Kaku! He's too cute.
Female:
1. Nami and Robin - they're both beautiful in their own way, how can I choose?! Ah, I feel like Sanji sometimes.
2. Vivi - Too pretty. And best hair in history of anime after Anthy from SKU.
3. Calipha. Mmm, she could sexually harass me anytime. As long as I come out alive from it.
4. Alvida - after her transformating, obviously.
5. Bellemere, I guess. She never really striked me as a wonderful beauty [must be the hair], but she's still darn sexy and AWESOME. <3
Other[? o.o]:
1. Robin's turtle
2. Robin's pig [from the "Excuse me baby, no parking on the battle grounds" image]
3. Chopper
4. Carue
5. Pierre FTW