Dork Shelf, a blog devoted to Toronto and nerd culture points to Nextround.net’s collection of photos of guys in so-bad-they’re-good Wolverine costumes. My favourite one is Jewish Wolverine, complete with adamantium menorah claws.
If you’re looking for costumed adventurers who really are “from the Tribe” (such as Kitty Pryde, mentioned recently in this blog entry), look no farther than Comic Book Religion’s catalogue of Jewish superheroes. The oddest one is “The Acidic Jew”, whose touch can dissolve anything.