(Regarding Ben Ledbetter's X-Men picks:

That Jim Lee cover is pretty atrocious for so many reasons, but Steve Lightle's version of X-Men #143 is a thing of beauty!)

My first encounters with Wonder Woman, Dick Tracy, and the Teen Titans...

The Legion, New Gods, and Devil Dinosaur...

1st Aquaman comic

1st Superman comic... man was this issue cool!!!

First Blockbuster, Plastic Man (he'd appeared in the Comix collection, but I hadn't read that story), and Ebeneezer Scrooge...

Eric, I didn't read that Superman comic until years later, but I agree! A very cool issue! "You speak American! I will speak American!" The eyes of Superbaby fans around the globe pop wide open...

First Vision, Yellowjacket & Goliath II       

                                                                                   First Falcon

First Guardian       

                                                                                     First Quality Heroes

First Kamandi          ;      

                                                                  First Zatanna & Elongated Man

First time with Jack Kirby's Fouth World characters, and the first time I met the JSA.  I got this one from a quarter box, and it took me awhile to find the other 2 parts on my limited comic budget back then.  Great story and art.

This issue had a one panel flashback of the Uncanny X-Men fighting Magneto.  It had no names with characters in the shot.  But it was my introduction to them.

First X-Men (still have the original in a box, too).

First Spiderman I can remember reading from the newsagents:

First Avengers I ever remember:

First time I saw the Valkyrie - still have this one in a Treasury edition somewhere

Could happily play this game all night...

Just one more, then - this is the first Captain America book I remember buying off the rack. I remember it distinctly because it was the US Bicentennial issue - summer day down here in Western Australia, on a blanket in the back yard, pocket money day bought me this, a box of orange Tic-Tacs and a bottle of lemonade. Man, that's a vivid memory... And no, I don't still have this one :)