x factor as solo artists
In the 1960's they had their own TV show. I know they appeared on the Smouthers Brothers show too.
Being part of the musical act- with some obvious choreography and costumes and other (TV friendly) touches, the Jackson Five probably first appeared on TV on the American Bandstand- not Sullivan.
You could find information on how to appear on the Extreme Home makeover reality television show on the ABC website. However the show ended its run on January 12, 2012 so it would be impossible to be accepted.
1975
Louis Who ?
The Ed Sullivan Show
The Ed Sullivan Show.
Sesame Street
rock school
channel Ten
Mork & Mindy
no they started out as a tv show
From what I could find from a quick search... X-Files was the first.
x factor as solo artists
The Pilot originally aired on 20 September 1984.
The co-star of I Love Lucy, Desi Arnez was the first Hispanic man to star on a regular TV show. Whether he was THE first Hispanic man to simply appear on TV has been lost to history.