Listening to some Screeching Weasel right now. Jawbreaker is good. The Ergs! are great. Bomb the Music Industry is good, a fair amount of ska influence in their earlier stuff. The Lawrence Arms. Descendents are some real old school hardcore/pop-punk. The Adicts are some good British pop-punk. Common Rider is good, features Jesse Michaels who used to sing for Op Ivy. Basically, any band signed to Lookout!, and some earlier Fat Wreck bands. Leatherface is good. That's all I've got for now.