The episode "In The Wee Small Hours" is an excellent aversion of this. All four detectives work the case of a missing girl who was in New York on a class trip.
Regrettably, though, Goren and Nichols never worked a case together.
They did work together in the season 9 premiere.
Fridge Logic: One episode revolves around an internet video, the stars of which are kidnapped while filming it. Okay, so who uploaded the video?
They staged the kidnapping so they could upload it. And since the 'kidnappers' quickly posted a ransom demand, it's reasonable that they uploaded the video so people would find out about the kidnapping.