Trivia: John Ratzenberger is the only actor depicted in all Pixar films, including Toy Story 3. He reprises his role as the voice animation of Hamm the pink pig.
Trivia: At one point in the film, Mr. Potato Head scurries across a toy piano. The notes the piano plays are the "Petrushka chord," a recurring motif from a ballet composed by Stravinsky about a puppet who comes to life. (00:58:55)
Trivia: Mr. Ray, the stingray from Finding Nemo is one of the toys in the daycare. We see him on the shelf to the left when the toys first fall out of the box. (00:21:10)
Trivia: When Rex bursts out of the ground in the opening scene, his roar is the roar of the Tyrannosaurus Rex in Jurassic Park.
Trivia: There are lots of old Pixar characters that appear in this film: a kid is playing with a firetruck that looks likes Red from Cars; when Hamm says they're dozens, on the table behind the toys there's a WALL-E going away; and the toy ant that goes into the bucket is Flick from A Bugs Life.
Trivia: This is the first PIXAR film to be released in IMAX.
Trivia: When Woody thinks the toys who were in the trash bag are being crushed at the back of the garbage truck, the truck's license plate number is RM237. Then later, when Woody goes back to Sunnyside to rescue his friends, Chatter Telephone warns him about the Monkey who is the "eye in the sky" while watching the security monitors, and in a couple of shots of those monitors there's a box at the right side of the table which has a very distinctive design. Both are nods to the movie The Shining. (00:56:15)
Answer: Yes, he is. He can be seen wearing the same black t-shirt with a skull motif that his younger self wore in the first movie and Pixar have confirmed that the character's intended to be Sid.
Tailkinker ★
In addition, they are voiced by the same person.