Already downloaded several large programs and would be pushing the limits on a 16 GB model.
How about everyone else? There is just a whole lot of neat stuff on the app store!!
For those of you running out if room you should consider this :AirStash: wireless flash drive + pocket media server + SD adapter for iPhone, iPod touch & iPad. I preordered one just in case.
Plus I don't have to share)yeah with apps being quite a bit larger I would say the 64GB is pretty perfect.