Yet another Devil's advocate positon from yours truly.
If we are discounting the miracles of $20 spring water and pushing on another human being, then I cannot say that I have.
Assuming that these miracles actually happened are to also assume that there are more prophets than in the holy texts. It trivializes the the four major prophets (Abraham, Muhammad, Jesus, and Moses) , taking them for granted.
When we are talking about the miracles that occur through such things as medicine (achieiving the 1% chance of survival, for example) and like events, then absolutely I have seen miracles. They didn't play God or anything like that, but the will to live certainly helped the person's cause.
This is an interesting question posed, might I suggest looking into NDE's (near death experiences). I think a lot of questions could be answered with proper research.