All Steven Spielberg really changed when he switched the guns in 'E.T.' to walkie-talkies was his fans' respect for him. But what if he'd make a bigger technological switch, such as enabling E.T. to actually "phone home"? Here we imagine the impact cell phones would have on various movies throughout the ages. (Hint: 'Serendipity' would be about ten minutes long.)

'The Blair Witch Project'

Christine Gritmon/Artisan Entertainment

'Labyrinth'

Christine Gritmon/Jim Henson/Google

'Ferris Bueller's Day Off'

Christine Gritmon/Paramount Pictures

'E.T.'

Christine Gritmon/Universal

'Home Alone'

Christine Gritmon/20th Century Fox

'Serendipity'

Christine Gritmon/Miramax

'Casablanca'

Christine Gritmon/Warner Bros.

'2001: A Space Odyssey'

Christine Gritmon/Warner Bros.

'Basic Instinct'

Christine Gritmon/TriStar Pictures

'Godzilla'

Christine Gritmon/Toho

Concepts by Christine Gritmon, Nick Nadel and Drew Weisholtz

Art by Christine Gritmon