I shared this on my main forum, figured I'd also put it up here...
Something kinda cool: Someone did an analysis of all the imagery and hidden bits in the Egypt Arc's OP and ED. MASSIVE spoilers, including character deaths; I know this is a nearly 30-year-old story, but better safe than sorry.
http://www.youtube.com/watch?v=7xGJXRcHKQY
Since it's in Japanese, a few of the more interesting bits:
-A LOT of references to the fact that we're going to lose a few heroes in the end. For example, the train scene in the ED shows Joseph holding only three tickets. A lot more explicit with the staircase scene in the OP, where the characters on the left (Polnareff, Joseph, and Jotaro) are the ones who survive the series while the ones on the right (Avdol, Iggy, and Kakyoin) don't.
-1:27: Very quickly, the name of the theme song changes from "Sono Chi no Kioku" (The Memory of This Blood) to "Sono Chi no Sadame" (The Fate of this Blood), the title of the OP for the Phantom Blood anime.
-1:41: When the theme song's credit is disappearing, for about one frame it turns into "Kamikaze Douga", the producer of the OP animations. Might be a callback to how, in the opening for Battle Tendency, the name briefly changed into "Kami Arashi" as a reference to Wammu's Holy Sandstorm attack.
-1:58: The trio that fights Vanilla Ice is shown; there's a red line between them, with Polnareff in front and Iggy and Avdol behind, signifying that they get killed.
-2:00 to 2:15: The effects The World has on everyone; notably, Jotaro's right hand moves almost imperceptibly, signifying his ability to resist its effects.
-2:31: The "Director" credit briefly changes into "Memetaa", the sound effect that appears in Phantom Blood when Zeppeli demonstrates his Hamon by punching a frog. This gag appears in all four OPs.
-2:36 to 2:47: A reflection of The World is very faintly visible in the glass Star Platinum shatters; the maker of the video was kind enough to use a post-processing program to reveal it.
-2:48 to 2:57: Five seconds pass between The World showing up in the broken glass and DIO appearing; during the battle against The World, Jotaro discovers that Star Platinum can freeze time as well, with a hard limit of five seconds.