I'm happy to say my commute was as normal as any other day!
I take the Metro North (commuter rail) in from the suburbs north of the city, then I walk the 12 blocks from Grand Central anyway. As of now, the Metro North workers are not joining the picket lines (different union), but they have been without a contract for 3 years, so they have said they might join the strike. We'll see.
If the Metro North doesn't run, I have to drive to my co-worker's in the Bronx and we'll all pile into a car (have to have at least 4 to enter the city) and drive in together.
One of the guys I work for lives in Brooklyn and he didn't even try to make it in. Wimp!