Lethal Weapon 5: Enough Already

From IMdb:

Gibson Eyes 'Lethal Weapon 5'

Hollywood heavyweight Mel Gibson is in talks to make a fifth Lethal Weapon film. THE PASSION OF THE CHRIST filmmaker is reportedly in talks with director Richard Donner, who is desperate for him to reprise his role as renegade cop Martin Riggs. However, there is no word on weather Gibson's co-star Danny Glover will be required to reprise his supporting role as detective Roger Murtaugh. The last Lethal Weapon film - which starred Rene Russo as Gibson's love interest - was released in 1998.

Personally, I hated seeing Riggs get repeatedly beat up in Lethal 4. It reminded me of Dennis Lehane's Patrick Kenzie, whose ego wrote checks his body couldn't cash. (Thank you, TOP GUN.)