I've decided to go one up on movies filmed in Oregon(my adopted home state.)  I mentioned Animal House which was filmed at the University of Oregon in Eugene.  There are a bunch of others that not many realized were filmed there.
The Postman:  The Kevin Costner flop was mostly filmed around Bend, Redmond, and other parts of Central Oregon.  Some parts were filmed in Washington and Arizona.
Kindergarten Cop:  Was filmed mostly in Astoria, Oregon.  There was a scene filmed at Ecola State Park in Cannon Beach, Oregon (the school carnival scene.)
The Goonies:  Also filmed mostly in Astoria and Cannon Beach.  Some of the internal cave scenes were filmed in a studio in California.
Free Willy:  Another gem filmed in Astoria, Cannon Beach, and Portland.  The aquarium scenes were filmed in Mexico City where Keiko(the orca that played Willy was housed at the time.)  Side note:  Keiko was rescued three years later and housed at the Oregon Coast Aquarium from 1996 to 1998.  Sadly he passed away off the coast of Norway in 2003.
The Burning Plain:  A new movie being release around Thanksgiving starring Charize Theron and was filmed primarily in Depoe Bay, Oregon.
The Hunted:  Starring Tommy Lee Jones and Benicio Del Toro was filmed around the Portland metro area as well as Salem and parts of Washington.
Elephant:  Filmed in Portland which is also the hometown of the director, Gus Van Sant.
Drugstore Cowboy:  Another Van Sant movie filmed in Portland.
My Own Private Idaho:  Van Sant filmed this one in Portland and Seattle.  None of it was filmed in Idaho.
Even Cowgirls Get The Blues:  Van Sant filmed this one in central Oregon around Bend and Sisters.
Body Of Evidence:  Filmed in Portland but not directed by Van Sant.  You do get to see Madonna naked.
One Flew Over The Cuckoo's Nest:  Filmed mostly at the Oregon State Mental Hospital in Salem, Oregon (now under plans to be torn down.)  The scene where they steal a boat is filmed in Depoe Bay.
Stand By Me:  Filmed around Eugene, Oregon.  The name of the town is Castle Rock(which is the fictional town writer Stephen King used for most of his novels.)  There is no Castle Rock, Oregon but there a Castle Rock, Washington at the base of Mt. St. Helens. 
Short Circuit:  Filmed in Astoria, Portland, and The Columbia River Gorge.
The River Wild:  Some parts were filmed on the Rogue River near Grants Pass, Oregon.
The Apple Dumpling Gang:  Parts of it were filmed in Bend, Oregon.
 
That's all the movies I could think of.  If anyone else can think of any, please let me know.
'nuff said.