Disneyland Paris is not huge so - So a few suggestions
1st day for Walt Disney studio's. Make sure you visit the Aerosmith rollercoaster (Rivals Nemesis in my onion), the stunt car show and the studio tram tour (amazing, see if nothing else).
Rest of the day/evening spend in the Village, although its sometimes worth exploring the area around the hotels.
2nd day Main Park - Must see/ride - Space Mountain, Honey I Shrunk the Audience (This is usually one of the first rides to open, so a good place to start), Pirates of the Caribbean (there is also a nice restaurant actually located in the ride), Indianna Jones and the temple of Peril, Big Thunder Mountain, and Phantom Manor are all worth a look. Most days/evenings there is a parade or a firework display.
3rd day usually spent revisiting rides/exploring.
Oh get Fast Pass tickets when ever possible.
3 days 2 nights is probably the best combination.