I'm kind of amused that "WDW" refers to the entire resort in folks' minds, but "DL" is Disneyland Park, not Disneyland Resort.
I'm going to try to give some equal time to DCA, if ya'll don't mind.
But before I head across the Esplanade, did anyone mention Star Tours at DLP? The queue is a bit different, but it's the same main attraction.
DCA is where you'll come closest to having identical attractions. Specifically, Soarin' Over California, It's Tough to Be a Bug, and MuppetVision. All three are the same main attraction. That's hardly a coincidence, since they're movie-based. There are differences in the queues at Soarin' and ITTBAB, very little difference at Muppetvision once you reach the pre-show area. Tower of Terror is different. If you love one, definitely experience its alter-ego. Animation? Mostly different (Animation has Turtle Talk, but that show's essentially unique every time, so it doesn't count). I can't swear Playhouse Disney will be different or the same - there's always a chance they'll have made a change in one show that isn't reflected in the other.
So, sorry... you're going to have to ride nearly everything in both parks. Ahh, such a pity!