Henrik Lundqvist is number 30 on the New York Rangers.
Rangers 2-1
Andrew Brown is number 30 on the New York Mets.
David Robertson is number 30 on the New York Yankees.
Darrin Walls is number 30 on the New York Jets.
Cooper Taylor is number 30 on the New York Giants.
No actual New York Rangers were in the movie: Sam Ball played a New York Ranger who was Jennifer Garner's boyfriend when she awoke at age 30 in the movie.
David Robertson
If you are talking two separate seasons then it is A-Rod.
There have been several players who wore number 6 for the New York Rangers. Currently, Wade Redden is wearing the number. The people who I can think of who have worn this number are Kasparitis, Glen Sather, Manny Malhotra, Bill Baker, Fred Cook, Lidster, and that's it really. I'm sure I'm missing about 30 but I don't think anyone else is of any significance. If you go to rangers.nhl.com, you can probably find the all-time roster by number.
Cory Lidle wore number 30 when he played for the Yankees.
Hector Lopez wore uniform number 11 as a New York Yankee.