The form is the least problem. Consider first what this is for, that decides
which data structure you need. You can use just anything if you just want a
"if I write it down then I can read it later" list.
If you want to be able to sort and search your list then a spreadsheet or a
database will do the job.
Big consideration is if/when you deal with relations. Relations are about,
say, one director - multiple movies, one movie - multiple actors. This is
what relational databases do, and if you need a "list all my Arnie movies"
thing then settle for nothing less than a relational database.
HTH. Best wishes Harald