Last night I was listening to the depressing Twins-Mariners game in my car, and it was an all-RBI set of commentators - Dan Gladden was doing play-by-play, with Jack Morris as the color man. Usually, John Gordon calls the game with Gladden as the analyst, with them giving Gladden a crack at play-by-play in the middle innings. Morris has been a sub when Gladden goes to the Sturgis rally, but I've never heard them both working together before. I only caught about a half-inning, so I'm not sure where Gordon was.
Gladden's not too bad at play-by-play - he doesn't have a very good "announcer voice", and he often gets sidetracked in other discussions which causes him to miss pitches, but he knows his baseball and knows the team well, which is a plus. Morris is about equivalent to Gladden as an analyst, although he knows more about the pitching game and less about the hitting and fielding (for example, he noticed last night that the Mariners' pitcher was tipping his slow curve by dragging his back foot to slow down his delivery).