Here's an audio recording of a US TV show from 1978 featuring a salute to Queen. I edited out most of the music. Songs featured were "Somebody to Love", "Bohemian Rhapsody", "You're My Best Friend", and "We Are the Champions". The tape runs out during "Champions" so I don't know if there was more, but I doubt it.
The narrator of the salute (and the announcer of the show) is Wolfman Jack.
This doesn't contain any new info, but I just like hearing Wolfman Jack (someone I grew up listening to) talk extremely positively and somewhat informatively about Queen back in the seventies. This may mean more to North Americans than anyone else. http://www.megaupload.com/?d=FY3LICS2
(The Midnight Special, episode 237 (audio extract), first aired 3/17/78, 2 minutes 15 seconds, 22MB)
The Midnight Special ran every Friday on NBC (after the Tonight Show with Johnny Carson) from 1973 to 1981. It featured live music with an occasional video tribute to a band or a singer. Queen never appeared live on the show.
Summary of the episode from tv.com: http://www.tv.com/the-midnight-special/show/2974/episode_guide.html?season=0
The Midnight Special
Episode 237. Hosts: Player
First aired: 3/17/1978
--Player (hosts) - "Baby Come Back," "Cancellation," "This Time I'm in It for Love" & "Come On Out"
--ABBA - "Name of the Game" (probably a music video)
--Jay Ferguson - "Thunder Island" & "Losing Control"
--New Birth - "It's Been a Long Time" & "Coming from All Ends"
--Starland Vocal Band - "Afternoon Delight" & "Late Night Radio"
--Midnight Special salute to Queen
Guest star: ABBA (Themselves, music video), Queen (Themselves, tribute) , Player (Themselves, hosts), Jay Ferguson (Guest), The New Birth (Guests), Starland Vocal Band (Guests)
Intoxicate your brain with what I'm saying