Creaking door.. while driving?

[iliketocrash]

for some reason my passenger side door creaks while i drive... it happens mostly when i brake.. sometimes under acceleration and sometimes what i hit bumps. Its definitely the door though. If i pull back on the handle on the door it makes the sound (while the door is shut. Driver's side door is fine. Both doors look like they seat alright. But both sometimes don't shut completely if you don't shut them hard enough. Its all a little hard to explain. can anyone help? please.

[NISTECH]

do the doors drop when opening them? also check your latch adjustment could be binding on the striker when its closed. try adjusting the striker down abit on the passenger side. if its binding this may help