I have to name the entire Tony Hawks series. It literally shaped my musical taste so much and i heard of hundreds of bands i might have not heard of otherwise. The first band it introduced me to though is Dead Kennedys with Police Truck. By far one of my favorite bands nowadays too.
Same exact story with me. Hearing Dead Kennedys in THPS opened my eyes to this whole other side of music I never knew existed. From there I branched off and started discovering punk bands on my own and the rest is history.
Same here, however I've never actually finished it. I rented it once when I was younger but didn't complete it then a couple of years ago I bought a used copy but it kept freezing at the same part. I must get around to buying another copy at some point.