Would be nice to actually have some competition between carriers in the US.
For example, Virgin Mobile (Sprint) has a pretty nice prepaid offer: 300 minutes, unlimited SMS, unlimited data (but with throttling after a certain traffic) for 35 bucks a month. It used to be 25 a month, but in the spirit of US wireless carriers, they increased it by 10 bucks just because.
So T-mobile should do something similar, maybe even cheaper (I think Sprint has more coverage, no?).