USA Today reports that a film version of '70s TV series Welcome Back, Kotter is in the works. Here's your wacky, but not so surprising, twist...   Ice Cube will reprise Gabe Kaplan's title role. $20 on Snoop as Horshack. He'll be in any movie. Build your own cast of hip-hop Sweathogs in the comments! Meanwhile, Don Cheadle's been tapped ...