First, we have Angry Birds. Now it appears that there are a bunch of copycats (whether in actual gameplay or just in name).
These are the ones I’ve come across so far:
Angry Honey (good permise, but could have been executed better)
Angry Sperms (simple gameplay, but try explaining to kids “why?”)
Trucks & Skulls (this is as good as, if not better than, Angry Birds)
What else have you uncovered? Post your findings in the comment section.