They were fun, because of the rush and they were not /easy/ but also not impossible.
I forgot how many there were? 3 or 2... I mostly remember "the alliance side" one and "the hoard side" one - did the alliance side one twice, one win, and the hoard one three times, twice a win. It was on Thunderlord? I cant remember, a classic PVP server - I was a human warlock, fun times.