Breakfast near MSG?
Tick Tock Diner is just around the corner, open 24 hours, and serves decent diner food. If it was me, I would go the extra distance to Le Grainne Cafe on 9th @ 21st. Antique Cafe is a bit closer, and a step up from the Tick Tock; it's just not my top pick.
183 9th Ave, New York, NY 10011
55 W 26th St, New York, NY 10010
Tick Tock Diner
481 8th Ave, New York, NY 10001