I haven't found any note of this in either the episode capsule or on this newsgroup, so I thought I'd mention it....
Right after Homer has geared up for the hunting trip, he notices Marge and Lisa in Cockamamie and heads over to give Marge a piece of his mind. During their conversation, you can see two weirdly-shaped objects over Marge's right shoulder: two saturn lamps from Twin Peaks!
In Twin Peaks, the saturn lamp sits on the end table nearest Cooper in the Red Room. It's in the same spot in the parody scene in Who Shot Mr. Burns? (Part 2). I was tickled to see it show up again in the camp emporium. <hugs Twin Peaks DVD set> <hugs Simpsons DVD set>
--Anna PS: I'm also hugging the Simpsons Road Rage game, which inspired me to start watching again after years of absence. I never thought I'd say it, but thanks, EA!