As part of its 50th anniversary celebration, Disneyland "plussed" a number of attractions. These plusses included new show elements in the Haunted Mansion and Jungle Cruise, more dangerous explosions in Pirates of the Caribbean, remodulating the Tiki Room birds' lousy accents, and some paint. On the park's actual anniversary date, July 17, 2005, additional plusses were revealed throughout the park, making every ride a new experience for both annual passholders and (as the APs like to say) "commoners."
The theme of the 50th-anniversary plusses was character. Guest surveys consistently showed that what most guests want is more opportunities to see and interact with Disney's characters, so in celebration of the characters that made Disneyland possible, they were inserted into a variety of rides and attractions.
For example :
Winnie the Pooh and friends in Pirates of the Caribbean. Tigger bounced through the flaming town, Eyore stared sadly from a jail cell, Kanga watched Roo bounce in the treasure-room gold, Rabbit commanded the Wicked Wench, Piglet floated through the ride in an inverted umbrella, and Pooh himself gave the redhead a big thumbs up!
Donald Duck and his nephews throughout Tomorrowland. Special remote-control Autopia cars were driven by the nephews (with frequent ramming of the cards ahead of them), Buzz Lightyear stopped fighting Emperor Zurg for a while to protect Scrooge McDuck's money bin from the Beagle Boys, and Donald himself piloted in Star Tours.
Chip and Dale in Big Thunder Mountain. Watch for the falling acorns in the earthquake tunnel!
Goofy in the Matterhorn. See him fight the hideous snow monster!
Mickey, Minnie, and Pluto in the Haunted Mansion. Mickey replaced the caretaker, Minnie was now the attic ghost, and guests were treated to a séance "headed" by Pluto!
As an added bonus, the "Partners" statue was temporarily been moved to the top of the Matterhorn to give it more prominence in the park.