I have a "free" ticket voucher ($10, two drink minimum) with no band name on it, but I penciled "Rev" on the back, so I can only assume this was The Reverend Horton Heat. They rock.

The band's official site has a listing of past tour dates, and it show Milwaukee on December 2nd. It also lists the Flat Duo Jets and the rockabilly/swing Amazing Crowns as openers. I had forgotten, but now that rings a bell with the Crowns. No idea if I saw the other, but probably.