Company behind it is involved in odd bits of some TV show (6)
I believe the answer is:
sitcom
'tv show' is the definition.
(I've seen this before)
'company behind it is involved in odd bits of some' is the wordplay.
'company' becomes 'co' (abbreviation).
'behind' means one lot of letters go next to another.
'is involved in' indicates putting letters inside.
'odd bits of' means one should take alternating letters.
The alternating letters of 'some' are 'sm'.
'co' put after 'it' is 'itco'.
'itco' inserted within 'sm' is 'SITCOM'.
(Other definitions for sitcom that I've seen before include "Light-hearted TV series" , "Amusing TV programme" , "Friends, for example" , "Amusing TV series (abbr.)" , "Type of comedy show" .)