This is Jimi Hendrix's first television appearance, on a show called Night Train in Nashville. It took place in May of 1965, backing up Buddy and Stacey on a hopped up version of the Junior Walker hit. More about the early period and chronology here.
Blows my mind to think he died a mere five years and four months later, in September of 1970. Think about the fierce musical virtuosity and extensive catalogue created and packed into that short time period. He truly changed music and the world forever. In the blink of an eye.