Radio City Music Hall Christmas Spectacular was exactly that - SPECTACULAR. Would recommend this to everyone both young and old. The building itself is amazing, and you can see the show no matter where you sit.
Would definately recommend if you are getting tickets via 'Will Call' then pick them up and day before the show or earlier if you can. The queues to 'Will Call' to collect tickets on the day were huge and a number of people were missing the start of the show since they were having to wait in line for so long.