The most common and most likely answer to this crossword clue is the 4 plus 4 letter word STAR TREK
I've seen this crossword clue in Independent
S
T
A
R
T
R
E
K
More clues leading to the result STAR TREK
- Philosopher king gets hold of rocket ultimately for space programme
- Show clue for Supertramp?
- TV show to turn on right geek regularly
- Begin to face disaster in chat show
- Science fiction series beginning with reference to edge of knowledge
- Programme beginning about king
- Kirk series open about closure of kirk?
- Surprise about knight in TV series
- Trio from Italy featuring in plain TV series
- Cult show’s launch concerning Kirk, primarily
Buddy explains!

The straight part
We know that "(TV) show" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case (tv) show = star trek.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.