I have just finished watching

.hack//sign
.hack//liminality

I greatly enjoyed .hack//sign and they way they abruptly ended the whole series. The way they did it will piss a lot of people off but I suspect that the story will continue in the world of the .hack games. This was lead on to because I watched liminality(which seems to corrdinate with the game series and seems to have back story in .hack//sign.

Overall it is quite the interesting series. By far the best music of any cartoon series I have ever seen(same person is doing the music for the story scenes in Xenosaga II so I am extremely pumped).