Goodness, there are a gazillion Easter Eggs in the flick. Many of the ones in the thread aren't really Easter Eggs, though, so much as obvious references.
Some of my favorites:
- Vietnam as the newest (and 51st) State of the U.S. and tourist destination (though we already saw this from earlier screen shots). Also cool: the flag on Blake's coffin actually has 51 stars.
- In young Laurie's flashback of Sally arguing the camera pans to show a TV with footage of atrocities in Vietnam. On top of the TV is the same snow globe that played a bigger role in the book.
- The Comedian's funeral starts with a shot of a statue that replicates the cover of Issue 2.
- Blake's apartment # is 3001. When he throws the coffee cup (and misses) Ozy it knocks off the 1... for "300".
- Dave Gibbons' signature painted on one of the city lamp posts
- The Veidt T-shirt on the little girl during the tenament fire rescue
- The name of the pilot on the "Miss Jupiter" B-29 that bombs Hiroshima is Peter Aperlo, who is the author of the Watchmen Film Companion and Art of the Film books.
- During the Top Knots alley fight, one of the thugs is wearing a shirt with an upside-down anarchy symbol that looks much like the "V" symbol from V FOR VENDETTA
- On some of the TV screens that Adrian is watching in Karnak: RAMBO III and 300 SPARTANS
- Veidt's "Unforgettable" cologne TV ad (that Blake watches in the beginning) shows a guy walking across a pool towards a lady... a subtle nod to Manhattan in Karnak at the end of the book.
- The combination to Dr. Long's briefcase: 300
- An homage to an Urban Legend during the Opening Credits montage with Dr. Manhattan filming on the moon: As a young boy Neil Armstrong loved to play baseball. His neighbours were called the Gorsky's and one day he hit the ball into their porch. As he went to get it back, he heard Mrs Gorsky from the inside: "BLOWJOB?!! Yeah, when the kid next door walks on the moon...!" And so, on the moon, Armstrong was supposed to have said "Good luck Mr Gorsky"...Completely made up of course, but it was pretty cool that they put it in the film...
- The smiley face is also all over the place throughout the film
And, my personal favorite:
- During the brief scenes that feature the device Manhattan/Ozy are working on, some of the equipment and jackets the scientists are wearing feature a logo and the name of the project:
Sub Quantum Intrinsic Device... (SQUID).