Child of the '80's post-punk, early DIY groups like Husker Du, Replacements, Black Flag, Minutemen, Sonic Youth, Meat Puppets and others. Early '90's still was good with groups like Nirvana, Primus, Lemonheads (what ever happened to Evan Dando?), Soundgarden, up until the "number bands" started to dominate in the mid-90's (Matchbox 20, 3 doors down, Blink 182.... ).
One of the best concerts I ever saw was Fugazi in Tucson. Just straight ahead music, no gimmicks, good mosh pit, but not out of control... could have fun without feeling like you were risking life and limb.