I don't think that's a bad thing, by the way. I love zombies.
But I thought that this cake topper- one with no blood effects or splatter in it at all- was a pretty cool idea too. Here, we see the newly married groom getting totally pwn'd by his bride.
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I also recently had a chance to do some more specific kind of zombie cake topper, recently. In this one, the couple decided to use the zombies to represent aspects of themselves- so we have one zombie in a 50's style for the dance they met at, and the other one is wearing the groom's marine uniform.
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There are more angles on both of these on the Wedding Cake Topper Gallery.