Does anyone know what that may be? Not the recent Johnny-Tara review of the last 8-10 years of Nationals on NBC, is it? Hope not.
Sorry; it is.

("USFS' 100th Anniversary Special" is what it's called on Peacock Premium.).
ETA:
Television Schedule
(copied from the 2021 U.S. Nationals Virtual Fan Experience link posted in GSD)
Championship-level events only.
All times Eastern; check local listings. Subject to change.
Thurs., Jan. 14 | Pairs Short Program | 6 – 8 p.m. | NBCSN (Live)
Thurs., Jan. 14 | Ladies Short Program | 10 p.m. – Midnight | NBCSN (Live)
Fri., Jan. 15 | Rhythm Dance | 4 – 6 p.m. | NBCSN (Live)
Fri., Jan. 15 | Ladies Free Skate | 8 – 11 p.m. | NBC (Live)
Sat., Jan. 16 | Men’s Short Program | 4 – 6 p.m. | NBC (Live)**
Sat., Jan. 16 | Free Dance / Pairs Free Skate | 9 p.m. – Midnight | NBCSN (Live)
Sun., Jan. 17 | Men’s Free Skate | 3:30 – 6 p.m. | NBC (Live)**
Sun., Jan. 24 | Free Dance | 5 – 6 p.m. | NBC
Sun., Jan. 31 | Best of the 2021 Toyota U.S. Figure Skating Championships | 12 – 2 p.m. | NBC
Sun., Feb. 14 | U.S. Championships Skating Spectacular | 4 – 6 p.m. | NBC
**The men’s short program and free skate programming details are subject to change, dependent on NFL playoff programming schedules.
Be sure to check your local listings:
My cable guide shows the Men’s SP on NBC Saturday, but it shows football on Sunday during the Men’s FS time slot. NBCSN has College Basketball listed for that slot right now.