Couple things.
First, Alice rules. You're not worthy.
If you dig the 70s stuff, you are off to a good start. Now put down Welcome to my Nightmare (which rules), and go give Flush the Fashion a spin. Excellent record. Then go and grab Easy Action (who cares about chronology). Brilliant. Then go buy Constrictor and bang your head. Then grab The Last Tempatation and Along Came a Spider and just listen to him be a genius. Then fill in the rest of the Coop's catalog and play them all everyday.
You will begin to understand.
Second, I'm not into Lady Gaga's music, per se, but she seems like a good person. And her stuff is definitely not the worst there is.