They are allowed to use other people's intellectual property because "Parody" or "Satire" falls under The Freedom of Speech.

It could also be as simple as they asked if they could & they were given permission.

The cast of Getting Into the Action - 2006 includes: Will Forte as himself Dave Jeser as himself Barry Katz as himself Jay Mohr as himself Don Reo as himself Joel Silver as himself Matthew Silverstein as himself James Vallely as himself Ron Zimmerman as himself

Dave has the biggest Dave... Of course!... What a silly question. But, besides Dave, the man with the biggest Dave is Steven "The Dave Jr." Heimbach.

Dave Eiland goes by "Dade City" Dave, and Super Dave.

The cast of Dave Courtney Dodgy Dave - 2007 includes: Dave Courtney