Great 'Alternative' Rock recommendations

I need some new "alternative" rock recommendations that hit you like a sonic punch in the face. I've come across some great bands / releases lates (The National, Iron & Wine, Band of Horses, Spoon, etc.) but none of these are the types of releases to really get your through a workout.

When Rage Against the Machine released their self-titled debut, I could put a tape of that CD in my walkman (does that date me?) and power up the north shore of Chicago on my mountain (or road) bike - and love the pain. Then I'd put in Tool's "Undertow" and head back south. Wilco just doesn't inspire me that way (no offense to Jeff Tweedy et al).

Any recommendations? What am I overlooking?