The most "traditional" of car shows I attend is the Cache Valley Cruise In. I can feel the burn out on this one creeping in though. Hard to find rooms, hard to find good parking spots for the show, really hot, and they've pulled back on the activities they used to do at these big shows.
2nd annual "Youth Impact Car Show". I enjoy this show because it support the community. This year wasn't as many cars, but there was another show going on, and the weather was stepping in.