Colbert Before Air: Billy Crystal Strolls Down Memory Lane at The Ed Sullivan Theater

After the interview wraps, Billy Crystal and Stephen Colbert get nostalgic about Crystal's iconic moments at the historic Ed Sullivan Theater.

#BillyCrystal #EdSullivan #DonMischer #MiltonBerle #SteveAllen #CarlReiner #DavidLetterman
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Watch The Late Show with Stephen Colbert weeknights at 11:35 PM ET/10:35 PM CT. O…