What words would you capitalize in the title catch me if can?

You would capitalize "Catch" and "Can" in the title "Catch Me If You Can".

Here's why:

* First word: The first word of a title is always capitalized.

* Major words: "Catch" and "Can" are both major words in the title, meaning they are not articles (a, an, the), prepositions (of, in, on), or conjunctions (and, but, or).

Therefore, the correct capitalization is Catch Me If You Can.