Animal Kingdom
Camp Minnie Mickey (CMM) always have a Bunch. Change through out the day. Mickey, Donald, Goofy, Minnie, Koda, some unique ones.
Just outside of the Isle Merchantile near the path to CMM (still on Discovery Island) Lilo and Stitch hang out there. Down the path toward CMM I've seen Chip and Dale there don't remember if it was before or after the bridge?
In Africa on the backside of the Tamu Refreshments you'll find King Louie and Baloo...and sometime "Devine" Lady dressed up like a vine on stilts...neat but creepy.
Rafiki's planet watch I've seen Rafiki and some others.
There's a spot just outside of Dinoland USA on Discovery Island that has Pooh, Tigger, Eeyore, and Piglet.
At the entrance I've seen some both in the morning at open and at close...also the taking Palmtree.
Magic Kingdom
Adventureland
See Aladdin, Genie, and Jasmine around the Flying Carpets.
Seen Rafiki, and others around the Swiss Family Tree House.
Seen Capt. Jack Sparrow, Capt. Hook, Mr. Smee, Peter Pan, Wendy. around Pirates of the Carribean. (I really like Peter and Wendy...you'd think you've met the real characters.)
Frontierland
Woody, Jesse, and Bullseye do a little show through out the day...but never really seen if they do pictures or autographs.
Just outside of the Country Bear Jamboree I've seen Briar Fox and Bear there.
Fantasyland
Seen Merlin, Mary Poppins near the Carosel.
Toontown
Everywhere.
Tomorrowland
Talking Trashcan outside Startraders
seen Buzz outside his ride...also Chip and Dale near there too.
Main Street USA
Seen Goofy and Max underneath the Flagpole.
Others around the circle of the Pole.
Mickey and Minnie on the Outside entance area just after opening.