Parts of New Vegas had some good dialog. Other parts, I wanted to pull out the red pen and marked up the script. The Mount Zion adventure made me cringe, so did the Sierra Del Madre one. Every one in it had verbal diarrhea and would not shut the fuck up.
"Half the words, fucker! Learn to say the same thing with Half the Fucking words. You do not have to launch into a monologue every time I ask how was your day?"
Borderlands had functional dialog, what little there was.
FF13 was not the best game in the world, but atleast everyone got to the point and moved on a lot sooner.