Motorhead (I was so high, I can't really remember most of it haha)
...And I've seen a bunch of local/regional black metal bands at a Mexican restaurant in Vegas that held concerts after closing time haha.
Want To See:
Black Label Society
Cream (They will never play live again tho, so just a fantasy haha)
Judas Priest (But I doubt they'll ever play live again)
...I wish I could have seen Dio before he passed away, so that will never happen now
And like twenty or thirty years ago I would have wanted to see Metallica, but not nowadays.