May 21 ushers in next summer's Memorial Day weekend. DreamWorks has staked out the holiday weekend for its animated franchise "Shrek 2," directed by Andrew Adamson (co-director of "Shrek") and Kelly Asbury ("Spirit: Stallion of the Cimarron") and featuring such star voices as Mike Myers (Shrek), Eddie Murphy (Donkey), Cameron Diaz (Fiona), John Cleese, John Lithgow (Farquaad), Antonio Banderas, Rupert Everett, Jennifer Saunders and Julie Andrews.