Formal:
* J'ai vu le film deux fois. (This is the most straightforward and literal translation.)
Informal:
* J'ai déjà vu le film deux fois. (This emphasizes that you've already seen it.)
* J'ai vu le film deux fois, c'est tout. (This adds a bit of emphasis and could be used to suggest that you're not interested in seeing it again.)
Using a past participle:
* Le film, je l'ai vu deux fois. (This is more conversational and emphasizes the movie.)
The best choice depends on the specific situation and your relationship with the person you're talking to.