I dislike Joe Buck, so I'll tend to skip games he's working.
Although, I do remember a couple seasons ago, he was discussing cleats with Troy Aikman during a broadcast (weather was a factor during this particular game). He declares that cleat length is something he doesn't understand, then proceeds to ask Troy something along the lines of "What's longer, 1/2 inch or 1/8th inch?".
Generally speaking, if I'm able to learn a couple new things during the course of a game (based on someone's analysis/explanation), then I enjoy the broadcast. So, that automatically eliminates any broadcast team Matt Millen is on. Having listened to him on several occasions, I can see why he was such a terrible GM.
Regarding the poll, for me it's a toss up between Nantz/Simms and Michaels/Collinsworth.