I'm not too fond of the oldies, I guess that's just not my generation. When I'm stoned I listen to the music I listen to sober, Screamo.

Bands include:
Alexisonfire
Billy Talent
Finch
Funeral for a Friend
My Chemical Romance
Thursday
The Used

One of the best bands to listen to live, and stoned... The Salads.
They are high energy and just great, not hardcore, just awesome.
Check out their site, I'm pretty sure you can sample some of their songs there.
Plus, on their site they have the E-spliff... a stoner band for sure.
www.thesalads.com