There's not a whole lot of JA performances on film to be had, unfortunately. You see, there seems to be a rule about that - the stupider a band is (cough*Metallica*Cough) the more they get filmed.
But, there's some footage of the Airplane in the Woodstock director's cut. It's only a half-assed performance of "Won't You Try" and Jorma doing "Uncle Sam's Blues", but it's still cool.
They also get a few songs in the complete Monterey Pop - High Flying Bird, Today, and I think Somebody to Love are all excellent, even though you already saw "bird" and "somebody to love" in Fly Jefferson Airplane.
There's also a DVD coming out in September of a Night at the Family dog performance, and it has two songs by the Airplane - The Ballad of Me & You & Pooneil (same as on "Fly", I think) and Eskimo Blue Day. It's also got the Dead and Santana.
Hope this helps.
"War's good business, so give your sons
But I'd rather have my country die for me" ~ Grace Slick, Rejoyce 1967