I know it's not a boid, but I just adore my black ratsnake, Houdini. He has a very curious personality, and is an awesome display snake. When I come up to the cage to feed, change his water, or just admire him, he always peeks his head out of his hide rock and comes up to the front of the cage, tongue flicking curiously. Black rats are also quite arboreal, so it's great to see him basking on the branches in his cage during the day.
He IS feisty, though, and once in awhile puts on a good show of "rattling" his tail and raising up his head for visitors while in the cage. But once he's out, you couldn't ask for a better snake to handle. He loves to perch on my wrist and is content to just hang out there while I'm doing stuff around the house... but he's not lethargic like, say, a ball python.
He also seems pretty "smart" for a snake. He definitely recognizes me as opposed to the other members of my household, and he is very alert and in-tune to his surroundings. One of the funniest photos I have is my two cats peering into his cage, and Houdini nose-to-nose with them on the other side of the glass, looking right back.
Like most snakes, he's an escape artist. When I first got him, he managed to squeeze through a 1/4" wide gap between a pair of sliding glass doors. Hence his name, Houdini. The gap has since been plugged with weatherstripping, and he's grown large enough now that he couldn't fit anyway. 
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My Growing Zoo:
1.0 Husband (Byron) ^_^
0.1 black cat (Shade)
0.1 Brazilian Rainbow Boa (Zia)
1.0 Leucistic Ratsnake (Houdini)
1.2 Cockatoo cichlids (A. cacatuoides yellow-gold)
1.2 Panduro cichlids (A. panduro)