
Amazing Spider-Man 86 - Stan Lee and John Romita Sr. debut a HAWT new costume for the Black Widow.
Avengers 78 - Buscema & Palmer's first run on the title, written by my favorite Avengers scribe, Roy Thomas

Fantastic Four 100 - Getting towards the end of the Lee & Kirby FF run
Green Lantern 78 - 3rd story in the legendary O'Neil/Adams GL/GA hippy-fest

Hot Wheels 3 - art by Alex Toth (can't find a copy of this anywhere!)
House of Mystery 187 - art by Alex Toth, Wayne Howard and Joe Orlando, cover by Neal Adams

Korak, Son of Tarzan 36 - Dan Spiegle art
Phantom Stranger 8 - Prime Jim Aparo art

Teen Titans 28 - Nick Cardy art
Thor 178 - First post-Kirby issue - John Buscema art

Tomahawk 129 - A recent discovery - Frank Thorne on Tomahawk was almost as brilliant as on Red Sonja
Tower of Shadows 6 - Art by Wally Wood, Tom Sutton and Gene Colan, plus a Ditko reprint

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EDIT: Gotta add two more...

Detective Comics 401 - The backup story is a Batgirl/Robin team-up drawn by Gil Kane
Ghost Manor 13 - 9 pages of fresh new Ditko