Smashing Pumpkins:

Anything with known lineage - audio and/or video.

Other (not limited to just these):

Anything from My Bloody Valentine on CD-R, DAT, or low gen. cassette.

Any Afghan Whigs shows (especially older ones).

+Live+ shows with known lineage.

Collective Soul shows with known lineage.

I will also trade for high quality anime videos (VHS, DVD, or encoded) or various anime merchandise.