All the films that I have watched

[Rachel Adams]

Should I use "that" or "which" in my sentence?

"Almost all the films that I have watched, I sometimes rewatch."

 

[emsr2d2]

You don't need either but if you want one, use "that". The combination of "almost all" and "sometimes" doesn't work. The construction isn't natural for the context.

I watch some/most films more than once.

 

[Rachel Adams]

Could you tell me why it's wrong to use "which"?

 

[5jj]

After everything, something, nothing, all/some/none (of the) the Xs, we normally use that, not which.