Look at the comparisons:
Mary Richards/Liz Lemon: Both in their 30's, single and had their share of bad boyfriends. Both have caring relationships with their boss and will go as boss' date to an event if asked. Producers with deadlines working on live TV.
Lou Grant/Jack Donaghy: Gruffy exterior, imposing figures, always want the the best for their Mary/Liz. Heart is definitely in the right place.
Sue Ann Nives/Phyllis Lindstrom: Jenna Maroney, Cerie. They say hilarious things, without meaning to.
Ted Baxter/Tracy Jordan: Both are the star of their show. I think it's safe to say they are both kooky.
The Mary Tyler Moore Show is a classic. All the characters were played so well, episodes were well written and expertly crafted. 30 Rock is headed there. Last week's episode in which Jack takes Tracy to the NBC psychiatrist, may rate as one of the funniest on TV. Tracy enters the room by asking the doctor, "Who's crazier, me or Ann Curry?" Jack portrays his version of Tracy's father (as Fred Sanford) which appalls the doctor, but gets to Tracy. Watch the episode on line if you missed it. You'll want to replay it so you don't miss anything. Writing and acting at it's best. Episode: Rosemary's Baby.