Ok, how about this for an idea. We take it in turns to post a favourite (British spelling) comic cover every day. This went really well on the comic fan website that I used to frequent. What we tried to do was find a theme or subject and follow that, until we all got bored with that theme. I'd like to propose a theme of letters of the alphabet. So, for the remainder of October (only 5 days) and all of November, we post comic cover pictures associated with the letter "A". Then in December, we post covers pertaining to the letter "B". The association to the letter can be as tenuous as you want it to be. For example I could post a cover from "Adventure Comics" or "Amazing Spider Man". However Spider Man covers can also be posted when we're on the letter "S". Adventure Comic covers could also be posted when we're on the letter "L" if they depict the Legion of Super Heroes. So, no real hard, fast rules - in fact the cleverer the interpretation of the letter, the better, as far as I'm concerned.
And it's not written in stone that we have to post a cover every day. There may be some days when no cover gets posted. There's nothing wrong with this, it just demonstrates that we all have lives to lead.
If everyone's in agreement I'd like to kick this off with one of my favourite Action Comic covers, from January 1967. Curt Swan really excelled himself here.
Discussion and voting on future monthly themes takes place on the "Nominations, Themes and Statistics for A Cover A Day" thread. Click here to view the thread.
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Not quite Mandrake versus a snake
"The Deadliest Snake of All!" against the Captain in the Oval Office!
I'll leave the interpretations and implications to others!
Here's Skeleton Hand #2, from ACG, Nov 1952. I'm assuming half woman/half serpent qualifies...
Since Captain America has already been used July 4, here's another patriotic American fighting for his country. Madame Viper is vamping in the lower right hand corner, but I think Selina Kyle does that better. (Image courtesy of the Grand Comics Database.)
A snake for.... International Bikini Day!
With bonus dinos.
Strange Tales #19
Ist appearance of the Cobra and earlier prototype the Rattler maybe?

More snakes in the jungle (Jungle Comics, that is).
I don't have Supernatural Thrillers #3, "Valley of the WORM!" but since it's adapted from a Robert E. Howard series, I assume that it's connected to Conan the Barbarian, though I know that's not Conan. They reprinted it in their "True Believers" line but that one one of the few that I never got as well!