John Stamos is a HUGE Disney fan -- he bought the "D" from the
Disneyland sign when they changed it. He took Rebecca Romijn to Disneyland on their first date.
Steven Tyler takes his family to WDW at least once each year. We saw them getting out of a van at Boardwalk a few years ago.
And I know Marie Osmond is a big fan. We've seen her with her brood several times -- she's usually doing a doll signing at some point while we're there, but we've only ever seen them in the parks.
And Kelly Ripa and Mark Consuelos (sp?) are also Disney lovers (I'm sure her job helps ;-)! They were at Animal Kingdom for the the DVC / AP sneak peak of EE. We saw them later at GF after we finished dinner and Kelly told my SIL how beautiful her baby is -- wow! We especially loved seeing them because they were a normal family -- they had their four kids and were trying to get everyone organized to go to the bathroom in shifts -- kinda funny. Kelly's parents with them and they were just doing the park thing -- no nannies, assistants, etc.