Here is the complete list of all the NBC TV show broadcasts I have so far in mp4 format. Keep in mind that this list is constantly updated, but all these shows are stored on an external hard drive and ready to send. Basically, I'm looking for more original airings or upgrades of whatever I currently have. A few shows in this list are repeat airings from when they were first reran, but the rest are original airings.

NBC - Saturday Night Live - Robert Klein/ABBA, Loudon Wainwright III (11-15-75)
NBC - Saturday Night Live - Richard Pryor/Gil-Scott Heron (12-13-75)
NBC - Saturday Night Live - Steve Martin/Kinky Friedman (10-23-76)
NBC - Saturday Night Live - Paul Simon/George Harrison (11-20-76)
NBC - Saturday Night Live - Sissy Spacek/Richard Baskin (3-12-77)
NBC - The Tonight Show Starring Johnny Carson (1-22-75)
NBC - KGW 8 Portland - Cheers - Give Me a Ring, Sometime [pilot episode] (3-17-83)
NBC - KNBC 4 Los Angeles - Good Morning, Miss Bliss - Pilot Episode (7-13-87)
NBC - KNBC 4 Los Angeles - Out of This World - The Nightmare (10-3-87)
NBC - KNBC 4 Los Angeles - Saturday Night Live - Dennis Hopper/Roy Orbison (5-23-87)
NBC - KNBC 4 Los Angeles - The Mike Douglas Show (12-10-74)
NBC - KOA 4 Denver - Quark - Pilot Episode (5-7-77)
NBC - KRON 4 San Francisco - Saturday Night Live - Christopher Reeve/Santana (4-6-85)
NBC - KXAN 36 Austin - Seinfeld - The Junior Mint (8-19-93)
NBC - KYW 3 Philadelphia - ALF - Try to Remember (2-9-87)
NBC - WBAL 11 Baltimore - Saturday Night Live - Steve Forbes/Rage Against the Machine (4-11-96)
NBC - WBZ 4 Boston - ALF - Help Me, Rhonda (11-10-86)
NBC - WBZ 4 Boston - ALF - I've Got a New Attitude (2-2-87)
NBC - WBZ 4 Boston - Amazing Stories - Life on Death Row (11-10-86)
NBC - WBZ 4 Boston - Amazing Stories - The 21-Inch Sun (2-2-87)
NBC - WCKT 7 Miami - SCTV Network 90 - Sweeps Week (2-25-83)
NBC - WCRB 3 Chattanooga - Mama's Family - Flaming Forties (9-29-83)
NBC - WDIV 4 Detroit - Saturday Night Live - Sean Penn/LL Cool J (10-24-87)
NBC - WDIV 4 Detroit - Saturday Night Live - Candice Bergen/The Notting Hillbillies (5-19-90)
NBC - WDIV 4 Detroit - Saturday Night Live - Steven Seagal/Michael Bolton (4-13-91)
NBC - WDIV 4 Detroit - Saturday Night Live - Jeff Daniels/Color Me Badd (10-5-91)
NBC - WJAR 10 Provience - Saturday Night Live - William Shatner/Lone Justice (12-20-86)
NBC - WLBZ 2 Bangor - Saturday Night Live - Andie MacDowell/Tracy Chapman (12-16-89)
NBC - WLBZ 2 Bangor - Saturday Night Live - Fred Savage/Technotronic (2-24-90)
NBC - WLBZ 2 Bangor - Saturday Night Live - Rob Lowe/The Pogues (3-17-90)
NBC - WLBZ 2 Bangor - Saturday Night Live - Alec Baldwin/The B-52's (4-21-90)
NBC - WMAQ 5 Chicago - Saturday Night Live - Ringo Starr/Herbie Hancock (12-8-84)
NBC - WNBC 4 New York - Cheers - 2 Good to Be 4 Real (11-14-85)
NBC - WNBC 4 New York - Family Ties - My Tutor (11-16-85)
NBC - WNBC 4 New York - Profiler - Venom (5-10-97)
NBC - WNBC 4 New York - Profiler - It Cuts Both Ways (5-10-97)
NBC - WNBC 4 New York - Saturday Night Live - Paul Simon/Art Garfunkel, George Harrison, Phoebe Snow (10-18-75)
NBC - WNBC 4 New York - Saturday Night Live - Christopher Walken/Bonnie Raitt (1-20-90)
NBC - WNBC 4 New York - SCTV Network 90 - The Great White North (7-31-81)
NBC - WNBC 4 New York - SCTV Network 90 - Best of Compilation (1-22-82)
NBC - WNBC 4 New York - The Pretender - The Paper Clock (11-2-96)
NBC - WSTM 3 Syracuse - Saturday Night Live - Bob Uecker/Peter Wolf (10-13-84)
NBC - WSTM 3 Syracuse - Saturday Night Live - Jesse Jackson/Andre Crouch, Whitney Phipps (10-20-84)
NBC - WSTM 3 Syracuse - Saturday Night Live - Ed Asner/The Kinks (11-17-84)
NBC - WSTM 3 Syracuse - Saturday Night Live - Ed Begley Jr./Billy Squier (12-1-84)
NBC - WSTM 3 Syracuse - Saturday Night Live - Eddie Murphy/Robert Plant & the Honey Drippers (12-15-84)
NBC - WSTM 3 Syracuse - Saturday Night Live - Roy Scheider/Billy Ocean (1-19-85)
NBC - WSTM 3 Syracuse - Saturday Night Live - Sigourney Weaver/Buster Poindexter (10-11-86)
NBC - WTMJ 4 Miluwakee - Cheers - If I Should Ever Leave You (2-28-85)
NBC - WTMJ 4 Miluwakee - Family Ties - Love Thy Neighbor (2-28-85)
NBC - WTMJ 4 Miluwakee - Night Court - Mac and Quon Le: Together Again (2-28-85)
NBC - WTMJ 4 Miluwakee - The Cosby Show - Back to the Track, Jack (2-28-85)
NBC - WWBT 12 Richmond - Saturday Night Live - Steve Martin/Tom Petty & the Heartbreakers (5-20-89)
NBC - WXIA 12 Atlanta - A Day in the Life - Chicken Dixie (10-28-87)
NBC - WXIA 12 Atlanta - Highway to Heaven - I Was a Middle-Aged Werewolf (10-28-87)
NBC - WXIA 12 Atlanta - St. Elsewhere - Night of the Living Bed (10-28-87)

Here's a list of what I have. LMK if you wanna trade or something.

CBS – Honey I Shrunk The Kids – 11/26/1991 w/o/c
ABC TGIF – 10/25/1991 w/o/c
Growing Pains – S3 E 19 & S3 E20 w/o/c
FOX – 21 Jump Street, Married With Children, Mr. President 9/27/1987 – 2 Disc Set w/o/c
NBC News Center 4 – The Elvis Presley Funeral 8/18/1977 w/o/c
CBS Special Report – Elvis Presley Funeral 8/18/1977
NBC – Elvis On Tour – 9/7/1977 w/o/c
CBS – The Incredible Hulk, The Dukes Of Hazzard, Dallas 11/14/1980 w/o/c
Buck Rogers In The 25th Century – The Golden Man 2/19/1981 & The Crystals 3/5/1981 w/o/c
NBC Sunday Night Movie – The Empire Strikes Back 6/28/1992 – 2 Disc Set
NBC Sunday Night Movie – Return Of The Jedi 3/19/1989 – 2 Disc Set
NBC Sunday Night Movie – Gremlins 1/1/1989
ABC Sunday Night Movie – Star Wars -World Premiere Broadcast hosted by Mark Hamill (1980)
Original broadcast of Dance Fever
1 original broadcast of Hollywood Squares and the show Valerie.
3 Thursday night timeshifts from 1985, 2 from NBC and 1 from CBS.
Several old timeshifts of MTV.
The first 2 hours of MTV (1981)
Video of MTV interrupting Headbanger's Ball to announce the confirmation of the death of Kurt Cobain.
Nirvana - Live at The MTV Studios - 1/10/1992
1999 MTV Spring Break – 2 DVD Set
1989 MTV Spring Break – 3 DVD Set
MTV Headbanger’s Ball – 11/2/1991 – Nirvana
Saturday Night Live – Joe Montegra, Vanilla Ice w/o/c
Saturday Night Live – 1/11/1992 – Rob Morrow, Nirvana w/o/c
MTV – Nirvana Tribute – 5/15/1994 w/o/c – 2 Disc Set
MTV – Nirvana Tribute – 12/1/1994
Original broadcast of WWF Raw Wrestling from 1996-2000
Original broadcasts of WCW Nitro 1996-1997
Original broadcasts of ECW Hardcore TV - 1997
Original broadcasts of ECW On TNN - 1999-2000
WWF Wrestlemania 3 original PPV broadcast (1986?)
WWF Owen Hart Raw Tribute Show - 5/22/1999 - Origianal Broadcast (1999)
Also have a few old Super Bowl games w/o/c inducing Super Bowl 13 from 1979.

I have a bunch of Unsolved Mysteries recordings. One has the complete series finale of Night Court