About the only TV theme that a lot of people would credit John Williams, composer of the scores for Star Wars, Superman, Raiders of the Lost Ark and a host of movies might be this.
The next theme that Williams composed for a TV show was this one for the Kraft Suspense Theater (I think this is the second version of the theme).
We tend to remember John Williams's long, ongoing collaboration with Steven Spielberg, and through him with George Lucas, but before that he had a long association with Irwin Allen. Williams did the scores for two of Allen's disaster movies – The Poseidon Adventure and Towering Inferno – but he also did the highly memorable themes for three of Allen's TV series. The first Allen series that he created the theme for was Lost In Space. Unfortunately it is impossible to find the actual opening credits sequences for most of the Irwin Allen series on YouTube. You can find it on Hulu...unless of course you aren't an American.
Williams did his next score for Allen for the more serious science fiction series The Time Tunnel (also my personal favourite of his series, though none of them hold up that well).
I'm not entirely sure what to make of John Williams final score for an Allen TV project, which was for Land Of The Giants. I've never seen the show, and I'm not sure that I really want to, to be absolutely honest with you. I mean the year that Land Of The Giants started was the same year that Allen did The Great Vegetable Rebellion episode of Lost In Space, so I'm not sure I could handle another Allen series at this late date. I've managed to find a copy of the opening of the episode with the music. Unfortunately it appears to have been taken off a Brazilian station, and while the English language credits are intact and the music can be heard, there is a Portuguese speaking announcer jumping in with a translation of every credit, and in a very loud voice, obviously stepping all over the music. Still even this is better than nothing which is what I would have had if I hadn't found this.
John Williams received his first Oscar nomination for the score for Valley Of The Dolls in 1968, the same year that he did the Land Of The Giants theme, and it pretty much marked the end of his TV series work. His music was sometimes used in TV shows after that, most importantly his music for the John Wayne movie The Cowboys which was used in the TV series of the same name which was a continuation of the story, and just about anything Star Wars related, and he has done commission work, like the music for NBC's Olympics broadcasts. Some of his music was apparently used on Jack & Bobby but I suspect it was music that he had done for something else. However, there is one other TV theme that he did. Quite honestly I think that all of us can be quite grateful that the pilot for this show was reshot and a new theme used. Keep an eye on the end credits.
Finally a real treat, the man himself in a situation totally unlike what one might expect from the composer of Star Wars and Superman and the former conductor of the Boston Pops. According to IMDB this is one of only two appearances John Williams made as an "actor." And while we all know how reliable IMDB is about cast appearance. This is the end of the first episode The Naked Truth. Keep an eye on the piano player that John Cassavetes as Staccato is jamming with and who takes over on the piano when he leaves. A similar scene is also seen at the beginning of the episode when Staccato leaves the piano and the same guy takes over for him.
That guy is John Williams. Red Norvo was on vibes (him I recognize thanks to the face fungus) while Shelley Mann is probably on drums. Also probable are Pete Candoli on trumpet. Barney Kessel and Red Mitchell but my ability to identify them is limited. According to the Complete Directory To Primetime Network And Cable TV Shows 1946-Present entry for Johnny Staccato: "Working at the club, and often featured in musical numbers, was the jazz combo of Pete Candoli, which included Barney Kessel, Shelly Mann, Red Mitchell, Red Norvo and Johnny Williams." (emphasis mine obviously). Apparently Johnny Staccato will be coming out on DVD. In fact, according to TV Shows on DVD it is supposed to be coming out on October 12 (ie the day that most of you will be seeing this because I couldn't get it finished on time). I think I might have to find a way of getting a copy. The first episode looked so hot it was cool man.
I used to listen to a CBC radio show host who didn't like John Williams. The kindest thing he could find to say about Williams was that he was a thief, who had stolen most of his "ideas" from the likes of Eric Korngold and Franz Waxman. I'm not sure he would have said that if he could have heard some of the TV work that John Williams did, and if anything a lot of what he was to do later is apparent in this work.