Heroes has been frustrating me for months now. To know Hiro and Peter to be powerless (well Peter has a power now, but that's not good enough) was awful and the storyline wasn't going anywhere. But I guess the return of Bryan Fuller as the writer has really done the trick.
"Cold Snap" was my favorite episode in a long, long time. Yeah, Peter still can't hold on to more than one ability at a time (wonder when that'll change), but Hiro can stop time (he still can't teleport). And Daphne dies yes; but not before the most amazing "Aaaw!" moment I've seen on television in recent times.
I hope this is the sign of things to come and we see the plot thickening and better character development as we go on.