My son loves Oso, but we have yet to see him in the parks. However, you will find Handy Manny & the Little Einsteins (usually no more than 2 out at a time) in DCA sometimes. Also be sure to check out the Playhouse Disney Live show, it's great!
OMG, DD can't get enough of Oso. She asked yesterday if he lives at Disneyland with Mickey. I said he was probably out on too many special assignments. Uh oh...the tune is creeping up on me..."Three special steps..."
He is often out in DCA in the Hollywood Backlot. We have seen him near the Playhouse Disney Live Theater, outside of the Animation Building, and by the Hyperion Theater.
Just wanted to bump this thread to see if there are any updates on Oso sightings in the parks. I've got a 2 year old that loves him almost as much as she does Mickey.