System of a Down - Favorite band, so this should be quite obvious
Gojira - I've seen videos of them live on youtube...and man are they amazing! Loved the band to begin with...but I've always had a thing for a band that can actually play their stuff live
HORSE the Band - These people know how to put on a show. Give 'em a room of 10 people and they will have them moving more than another band would with a 100 people (Keyboardist puts it - "If a band is sweating less than the audience, then they are doing something wrong")
Dir en Grey - Long concerts..and yet they go all out (especially Kyo, the vocalist) throughout the entire concert. All out. I've seen videos of them live..they'll be on their 20th song and Kyo will be near collapsing but still pushing out screams and growls..and this is after doing the same thing the previous few days on top of that