1/05/91 Trixter hosts
1/12/91 Top 20 Year End Countdown with Jani Lane of Warrant (repeat)
1/19/91 Iron Maiden host on the road
1/26/91 Anthrax host on the road
2/02/91 Riki Rachtman hosts Grammy Edition '91
2/09/91 Riki Rachtman hosts Rock In Rio '91 Part 1 w/Queensryche/Megadeth/Judas Priest
2/16/91 Rock In Rio Part 2
2/23/91 Rock Blocks
3/02/91 No Guests (KNAC 5th Anniversary concert Alice In Chains/Lynch Mob)
3/09/91 The Throbs (?)
3/16/91 Cinderella hosts
3/23/91 Bulletboys host
3/30/91 Metal Blox
4/06/91 ?
4/13/91 Alice In Chains/Pantera
4/20/91 White Lion/Mind Funk
4/27/91 Mr. Big/Kreator
5/04/91 Lemmy Kilmeister of Motorhead co-hosts
5/11/91 Primus/Katmandu
5/18/91 Mission Megadeth part 1: Skydiving in Paris Valley
5/25/91 Mission Megadeth part 2: The Cathouse
6/01/91 Tyketto/Wrathchild America
6/08/91 Cycle Sluts From Hell/Junkyard release party
6/15/91 Riki Rachtman hosts w/Dangerous Toys/Kik Tracee
6/22/91 Armored Saint/Suicidal Tendencies
6/29/91 Scorpions
7/06/91 Slayer In New York
7/13/91 Clash of the Titans: Slayer, Megadeth, Anthrax, Chuck D, Alice In Chains
7/20/91 Operation Rock n Roll w/Motorhead/Judas Priest/Alice Cooper/Dangerous Toys
7/27/91 ?
8/03/91 L.A. Guns
8/10/91 Aldo Nova
8/17/91 Riki Rachtman hosts w/Bang Tango/Liquid Jesus
8/24/91 Warrior Soul/White Trash
8/31/91 Megadeth hosts
9/07/91 Invading the Empire part 1 Monsters Of Rock Festival: AC/DC/Metallica/Motley Crue/Queensryche/Black Crowes
9/14/91 Invading the Empire part 2 Queensryche In London
9/21/91 Four Horsemen
9/28/91 Pearl Jam (Eddie Vedder & Mike McCready)
10/05/91 The Cult/XYZ
10/12/91 Riki Rachtman hosts w/Lita Ford
10/19/91 Vanessa Warwick guest hosts Concrete Foundations Forum '91 Ozzy, Megadeth, Motorhead, Suicidal Tendencies, Slayer, Soundgarden, Blind Melon, Alice In Chains, Prong, The Almighty, Slik Toxik, Ugly Kid Joe, LSD
10/26/91 Nikki & Vince of Motley Crue host w/Lonn Friend 5th Annual Rip Magazine Party *
11/02/91 Riki Rachtman hosts w/Nirvana/Sepultura
11/09/91 Law & Order/Ugly Kid Joe/Infectious Grooves
11/16/91 Fates Warning
11/22/91 Riki Rachtman hosts w/Ozzy & Jack Osbourne Rock Blocks
11/30/91 Prong/Soundgarden/Corrosion of Conformity
12/07/91 Cathouse Anniversary Faster Pussycat/Anthrax/Junkyard/Bang Tango/Megadeth/Electric Love Hogs
12/14/91 Tribute To Aerosmith
12/21/91 Best Of 1991 @ Riki's Apartment
12/28/91 Rock In Rio Encore (a mix of Rock In Rio Part 1 & 2 from the begining of the year)