I'm not really a huge fan of Scott Hamilton's commentating, although he's gotten somewhat better since he first started, and Nancy Kerrigan's commentating on Ice Network drove me crazy too.
One of the best things about streaming skating live online is definitely the lack of commentary most of the time; I've gotten so used to not having commentators that when there actually is skating coverage on tv, it feels like the commentators are interrupting my own thoughts. :P
That said though, I still really like Dick Button, Terry Gannon, and Paul Wylie as commentators. Mr. Button cracks me up and I really miss the days when he was commentating frequently. Also, the British Eurosport guys are pretty good, and it was fun hearing Kurt Browning commentate a few times as well.