Only counting the ones who survived (one died of SIDS), I can think of 15 nieces and nephews offhand, and I'm pretty sure that my oldest brother has more than I am positive about. (In fact possibly more than he knows about. He won that paternity case but that was before DNA testing...)
Unfortunately, due to quirks of geography and a spread out family, I only got to see one as a baby. Since I was fairly young at the time, it did not make the impression that it should have.
Cheers,
Ben