Alright, technically this is a cheat because only one of them really deserves the title classic, but the combo points are simply too high to pass up:
First: Signs - 2002
Featuring - Mel Gibson, Joaquin Phoenix, Rory Culkin, and Abigail Breslin
Second: Field of Dreams - 1989
Featuring - Kevin Costner, Amy Madigan, James Earl Jones, Ray Liotta, Timothy Busfield and Burt Lancaster
Theme: If you want to avoid crazy shit happening at your house - never mix baseball and cornfields; they're the juncture for the supernatural.
Three Oscar Nominations - Field of Dreams (Best Music, Original Score; Best Picture; Best Writing, Adapted Screenplay)
Insanely Awesome James Earl Jones Speech - No, I'm not kidding, it is insanely awesome. So awesome in fact, if the film crew didn't start their own clap the second they stopped rolling, they should all be put in cinematic jail.
Most Awesome Invasion Tactic - Nothing quite like building your invasion plans on a map system that's only valuable a third of the year and only available in a small percentage of the global climate. Damn you seasons! We keep having to redraw the maps over and over again. No wonder we ended up invading Pennsylvania three hundred years too late!
Signs - 6.50/10
Field of Dreams - 8.25/10
The Bicentennial Production Design - Can we just give a standing ovation to the 1976 Academy for giving the award to a contemporary movie? They had a Western, a period drama about the theatre...