Here are a couple of my personal favorites.
Setting Sons by The Jam (If you like The Who, you'll like The Jam. Be aware, though, that they are not a straight-up punk group: they combined elements of punk, garage, funk, and Motown.)
Under The Big Black Sun by X (I also second afterstasis' recommendation of Los Angeles. You can't really go wrong with any of X's records.)
The Incredible Shrinking Dickies by The Dickies (I have a Dickies mix up on the blog, if you'd like to give the band a try.)
Damned Damned Damned by The Damned
Warehouse: Songs and Stories by Husker Du (For a generally more melodic approach to hardcore, look no further than Husker Du.)
Singles Going Steady by The Buzz****s (Probably the best greatest hits album ever assembled.)
Q: Are We Not Men? A: We Are Devo! by Devo (I'm a shameless plug.)