"DUI" is a strange episode. While it has a wonderful twist, it also presents a very strange and confusing message about drunk driving. The show begins with a guy in a Rolls Royce driving about town erratically. He then plows into a man on the sidewalk--killing him. Here is where it's odd--AFTER he runs over the man, instead of hiding the booze, he begins drinking more! Then, he freely admits he was drinking but fights hard against receiving any sort of substantial penalty for the crime.
Soon the story becomes a preachy social commentary show about the evils of drunk driving and the weakness of the laws punishing these folks. While all this was very true back in 1981 and it makes a great case for strengthening the laws, SUDDENLY midway through the show Quincy realizes that this is NOT a case of vehicular manslaughter as a result of drunk driving but premeditated murder. As a result, all the grandstanding and preaching about the ills of drinking and driving are forgotten. And, in an uncomfortable ending at Danny's, Quincy and his friends (including the anti-drunk driving advocate in her wheelchair) are all toasting their victory. What victory? The drunk driving laws and precedent were unchanged. Odd.
It's all a shame, as without the preachy bits, the idea of a man pretending to be drunk to hide a murder is great. But, instead it's like two episodes--and the one where Quincy was on a crusade to increase penalties for drunk drivers ended up instantly vanishing late in the episode! Weird but still watchable.
By the way, the advocate in the wheelchair was using a desk which did NOT fit her chair and some of her file cabinets were inaccessible to her in her own office! Odd they didn't notice this.