If you like Star Trek and you have a friend that would play through co-op with you, I'd recommend it. A friend and I are playing through and we're reasonably enjoying it.
I guess the big difference maker is if you're a fan of the new Star Trek movies and/or the Original Series. If you are, you'll appreciate a lot of the little details, like it's fun to see some of the Enterprise's inner workings. My friend and I were thrilled when you get to a fight a little like the original show's Gorn fight. If you don't care about Star Trek, you can pass without losing too much sleep on it.
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