I agree with Stuart about the first answer. The second answer is also incorrect, though, because we would not say "these" if the tomatoes are "over there." We would either say "those tomatoes over there" (if the tomatoes are somewhat far away) or "these tomatoes over here" (if the tomatoes are near the speaker). The third one is fine. Depending on the context, "that DVD" could also be correct.

Second and third are correct. For the first you could say Those that you made last week were delicious. But that does not sound natural. I would say The ones you made last week were delicious.