"I'm not the authority on the topic, but I would say yes to those, with the possible exception of "Movie people like Bob Hope and Jerry Lewis appearing in a comic book?" since we've already done real-life people appearing on a…"

"As a kid in the 70s, I found the doppelganger twist in Warlock mind-blowing:"

"Sounds good to me. And one more member of the Legion of Superman doubles!"

"The second one was posted last month, as my attempt to connect "Snow" covers with doppelgangers."

"I knew that Marvel put out an ALF comic, but I didn't realize he'd ever been folded into continuity. Did we ever see Alf with a gun? And did his final appearance involve an untimely truck?"

"Bat and Super families? Wonder Women? Spider-men? Bah! Here's the dark horse candidate that's going to have the most duplicates. Once I post this one, I'm sure all of the other covers on which he appears with duplicates will follow:"

"I actually recall Supergirl showing a friend a/the Linda Lee robot to account for something. Let that sink in: her friend now <i>knows</i> that there's a Linda robot belonging to Supergirl and <i>still</i> doesn't…"

"As for One Night: very strong performances interesting history. It was adapted from a play, plays like it was adopted from a play and, impressive direction notwithstanding. I couldn't help think I would prefer the live performance."

"Batman has also scored fairly high in the duplicate department, though my money's still on Suplicates for the win:"

"I thought I'd covered the Supergirl meets Supergirl covers at the start of the month, but only one of these is a repost. Supergirl appears to have met herself more often than Spider-man at the height of the clone saga."

"Yes-- Dave: Quake went from being a miner to being a cowboy in 1969: I actually recall this commercial (a couple of videos down) that explained his transformation, as it's vitally important for breakfast cereal mascots to have backstories to…"

"The Alien Wizard and his duplicates are, apparently, full of gas. Also, that's some alien fashion sense."

"I've never read it, but it obviously fits this month's theme:"

"More doppelfledermäuse"

"Okay, so I botched the mouse post. How about a pair of pre-Crisis Terra-Men?"